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Network Working Group                                          A. NewtonRequest for Comments: 3982                                VeriSign, Inc.Category: Standards Track                                        M. Sanz                                                                DENIC eG                                                            January 2005IRIS:  A Domain Registry (dreg) Type for theInternet Registry Information Service (IRIS)Status of This Memo   This document specifies an Internet standards track protocol for the   Internet community, and requests discussion and suggestions for   improvements.  Please refer to the current edition of the "Internet   Official Protocol Standards" (STD 1) for the standardization state   and status of this protocol.  Distribution of this memo is unlimited.Copyright Notice   Copyright (C) The Internet Society (2005).Abstract   This document describes an Internet Registry Information Service   (IRIS) registry schema for registered DNS information.  The schema   extends the necessary query and result operations of IRIS to provide   the functional information service needs for syntaxes and results   used by domain registries and registrars.Table of Contents1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .22.  Document Terminology . . . . . . . . . . . . . . . . . . . . .33.  Schema Description . . . . . . . . . . . . . . . . . . . . . .33.1.  Query Derivatives  . . . . . . . . . . . . . . . . . . .33.1.1.  <findRegistrarsByName> Query . . . . . . . . . .33.1.2.  <findDomainsByContact> Query . . . . . . . . . .43.1.3.  <findDomainsByName> Query  . . . . . . . . . . .43.1.4.  <findDomainsByIDN> Query . . . . . . . . . . . .43.1.5.  <findContacts> Query . . . . . . . . . . . . . .53.1.6.  <findDomainsByHost> Query  . . . . . . . . . . .53.1.7.  Contact Search Group . . . . . . . . . . . . . .53.2.  Result Derivatives . . . . . . . . . . . . . . . . . . .63.2.1.  Privacy Labels . . . . . . . . . . . . . . . . .63.2.2.  <domain> Result  . . . . . . . . . . . . . . . .73.2.3.  <host> Result  . . . . . . . . . . . . . . . . .103.2.4.  <contact> Result . . . . . . . . . . . . . . . .11Newton & Sanz               Standards Track                     [Page 1]

RFC 3982                       IRIS-Dreg                    January 20053.2.5.  <registrationAuthority>  . . . . . . . . . . . .133.3.  Generic Code Derivatives . . . . . . . . . . . . . . . .133.3.1.  <searchTooWide>  . . . . . . . . . . . . . . . .133.3.2.  <languageNotSupported> . . . . . . . . . . . . .143.4.  Support for <iris:lookupEntity>  . . . . . . . . . . . .144.  Formal XML Syntax  . . . . . . . . . . . . . . . . . . . . . .155.  BEEP Transport Compliance  . . . . . . . . . . . . . . . . . .365.1.  Message Pattern  . . . . . . . . . . . . . . . . . . . .365.2.  Server Authentication  . . . . . . . . . . . . . . . . .366.  URI Resolution . . . . . . . . . . . . . . . . . . . . . . . .366.1.  Application Service Label  . . . . . . . . . . . . . . .366.2.  Bottom-Up Resolution . . . . . . . . . . . . . . . . . .376.3.  Top-Down Resolution  . . . . . . . . . . . . . . . . . .377.  Internationalization Considerations  . . . . . . . . . . . . .388.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .388.1.  XML Namespace URN Registration . . . . . . . . . . . . .388.2.  S-NAPTR Registration . . . . . . . . . . . . . . . . . .398.3.  BEEP Registration  . . . . . . . . . . . . . . . . . . .399.  Security Considerations  . . . . . . . . . . . . . . . . . . .3910. References . . . . . . . . . . . . . . . . . . . . . . . . . .3910.1. Normative References . . . . . . . . . . . . . . . . . .3910.2. Informative References . . . . . . . . . . . . . . . . .40A.  Examples of Requests and Responses . . . . . . . . . . . . . .41A.1.  Example 1  . . . . . . . . . . . . . . . . . . . . . . .41A.2.  Example 2  . . . . . . . . . . . . . . . . . . . . . . .42A.3.  Example 3  . . . . . . . . . . . . . . . . . . . . . . .43B.  An Example of Database Serialization . . . . . . . . . . . . .47C.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . .48   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . .49   Full Copyright Statement . . . . . . . . . . . . . . . . . . . . .501.  Introduction   This document describes an IRIS registry schema for Internet domain   registries using an XML Schema [4] derived from and using the IRIS   [5] schema.  The query and result types outlined in this document are   based on the functional requirements described in CRISP [17].   The schema given is this document is specified by using the   Extensible Markup Language (XML) 1.0, as described in XML [1]; XML   Schema notation, as described in XML_SD [3] and XML_SS [4]; and XML   Namespaces, as described in XML_NS [2].   Examples of client/server XML exchanges with this registry type are   available inAppendix A.Newton & Sanz               Standards Track                     [Page 2]

RFC 3982                       IRIS-Dreg                    January 20052.  Document Terminology   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this   document are to be interpreted as described inBCP 14,RFC 2119 [10].3.  Schema Description   IRIS requires the derivation of both query and result elements by a   registry schema.  These descriptions follow.   References to XML elements without a namespace qualifier are from the   schema defined inSection 4.  References to elements and attributes   with the "iris" XML namespace qualifier are from the schema defined   in IRIS [5].   The descriptions contained within this section refer to XML elements   and attributes and their relation to the exchange of data within the   protocol.  These descriptions also contain specifications outside the   scope of the formal XML syntax.  This section will use terms defined   byRFC 2119 [10] to describe these.  While reading this section,   please referenceSection 4 for needed details on the formal XML   syntax.3.1.  Query Derivatives3.1.1.  <findRegistrarsByName> Query   <findRegistrarsByName> searches for a registration authority   designated as a registrar for the registry of the server.   If present, the <baseDomain> element MUST restrict the results of the   search to registrars capable of registering subdomains in the domain   signified by the content of this element.   The <namePart> element restricts the scope of the query with its   child elements.  The <beginsWith> element specifies the beginning of   the registrar's name.  The <endsWith> element specifies the end of   the registrar's name.  The <exactMatch> element specifies equivalence   to the registrar's name.   If the <namePart> element is not present, the query MUST return all   registrars applicable (i.e., in consideration of <baseDomain>).   This query MUST return a result set of zero or more   <registrationAuthority> elements.  SeeSection 3.2.5.Newton & Sanz               Standards Track                     [Page 3]

RFC 3982                       IRIS-Dreg                    January 20053.1.2.  <findDomainsByContact> Query   <findDomainsByContact> finds domains by searches on fields associated   with a domain's contact.  A search constraint of <baseDomain> MUST   restrict the results to domains underneath the domain specified by   its content, if it is present.   The allowable search fields are handled with either the   <contactHandle> element or one of the elements in the   "contactSearchGroup" (seeSection 3.1.7).  The <contactHandle>   element allows the domains to be selected based on the contact having   the specified contact handle.   The query MAY also be constrained further by using the optional   <role> element.  The contents of this element signify the role the   contact has with the domain.   This query also provides optional <language> elements containing   language tags.  Clients MAY use these elements to hint about the   natural language(s) of the affected element.  Servers MAY use this   information in processing the query, such as in tailoring   normalization routines to aid in more effective searches.3.1.3.  <findDomainsByName> Query   The <findDomainsByName> query finds domains by the name of a domain   as it is known in DNS.  The <namePart> element restricts the scope of   the query with its child elements.  The <beginsWith> element   specifies the beginning of the domain name.  The <endsWith> element   specifies the end of the domain name.3.1.4.  <findDomainsByIDN> Query   This query differs from the <findDomainsByName> query by allowing the   scope of the query to take internationalized domain names into   consideration.  This query will return the union of the desired   domain and any associated variants, therefore differing from a lookup   in the "idn" entity class (Section 3.4) (which only returns the   domain or no results).   The <namePart> element restricts the scope of the query with its   child element.  Its child, the <exactMatch> element, is designed to   contain IDNs and not ACE labels, and thus MUST match only against   equivalent IDNs, according to the notion of equivalence defined inRFC 3490 [14].   This query also provides optional <language> elements containing   language tags.  Clients MAY use these elements to hint about theNewton & Sanz               Standards Track                     [Page 4]

RFC 3982                       IRIS-Dreg                    January 2005   natural language(s) of the affected element.  Servers MAY use this   information in processing the query, such as in tailoring   normalization routines to aid in more effective searches.3.1.5.  <findContacts> Query   <findContacts> searches for contacts given search constraints.  The   allowable search fields are handled by one of the elements in the   "contactSearchGroup" (seeSection 3.1.7).   This query also provides optional <language> elements containing   language tags.  Clients MAY use these elements to hint about the   natural language(s) of the affected element.  Servers MAY use this   information in processing the query, such as in tailoring   normalization routines to aid in more effective searches.3.1.6.  <findDomainsByHost> Query   This query does a simple search for the domains being hosted by a   name server.  The search is constrained by using either the host name   [12], host handle, IPv4 address, or IPv6 address of the name server.3.1.7.  Contact Search Group   Some of the queries above have similar query constraints for   searching on contacts.  This section describes those common   parameters.   <commonName> allows the query to be constrained based on the common   name of the contact.  The constraint can constrain the query either   by an exact match using the <exactMatch> element, or by a subset of   the common name using the <beginsWith> and <endsWith> elements.   <organization> allows the query to be constrained based on the   organization name of the contact.  It has the same semantics as the   <commonName> element.   <eMail> constrains the query based on the e-mail address of the   contact.  This may be done by an exact e-mail address using the   <exactMatch> element or by any e-mail address in a domain using the   <inDomain> element.  The <inDomain> element MUST only contain a valid   domain name (i.e., without an '@' symbol), and the matching SHOULD   take place only on the domain given (i.e., no partial matches with   respect to substrings or parent domains).  If either the contents of   the <inDomain> element or the domain part of the contents of the   <exactMatch> element contain a name with non-ASCII characters, they   MUST be normalized according to the processes ofRFC 3491 [15].Newton & Sanz               Standards Track                     [Page 5]

RFC 3982                       IRIS-Dreg                    January 2005   The <city>, <region>, and <postalCode> elements restrict the scope of   the query based on the city, region, or postal code of the contact,   respectively.  Each must only contain an <exactMatch> element   containing the exact city, region, or postal code (i.e., no substring   searches).3.2.  Result Derivatives3.2.1.  Privacy Labels   Several of the results in this registry type have values that cannot   be given but must be specified as present or must be flagged so that   clients do not divulge them.  In order to achieve this, some of the   results use the following element types:   o  "dateTimePrivacyType" -- contains the XML Schema [3] data type      "dateTime".  The contents of this element MUST be specified by      using the 'Z' indicator for Coordinated Universal Time (UTC).   o  "stringPrivacyType" -- contains the XML Schema [3] data type      "string".   o  "normalizedStringPrivacyType" -- contains the XML Schema [3] data      type "normalizedString".   o  "tokenPrivacyType" -- contains the XML Schema [3] data type      "token".   o  "domainStatusType" -- contains the optional element of      <appliedDate>, indicating the date and time when the status was      applied, and the optional element of <description> with the      required attribute 'language', indicating a description of the      status.  This element also has the optional attribute 'scope',      indicating the scope or origin of the status value.   o  "contactTypeType" -- contains optional <description> child      elements.  Each <description> child element requires a 'language'      attribute.   As specified, these elements can have nil values and therefore may be   present with empty content or present with their specified content.   The use of these elements is also optional.   If present without content, each of these element types MUST have one   or more of the following boolean attributes:   o  'private' -- If true, this specifies that the content is absent      because it may never be published.Newton & Sanz               Standards Track                     [Page 6]

RFC 3982                       IRIS-Dreg                    January 2005   o  'denied' -- If true, this specifies that the content is absent      because policy does not allow it to be given at the current level      of access.   If present with content, each of these element types MAY have one or   more of the following boolean attributes:   o  'doNotRedistribute' -- If true, this specifies that the content is      not to be redistributed.   o  'specialAccess' -- If true, this specifies that the content has       been provided due to special access rights.   These boolean attributes SHOULD be used in accordance with the level   of access granted to the recipient of the data.  For example, marking   data as 'private' or 'denied' is to be expected if the user is   anonymous or has some other low level of access that does not warrant   viewing that particular data.  Likewise, data marked with   'doNotRedistribute' or 'specialAccess' is to be expected if the user   is authenticated and has a high level of access.3.2.2.  <domain> Result   An example of a <domain> result:   <domain     authority="iana.org" registryType="dreg1"     entityClass="domain-handle" entityName="example-com-1">     <domainName>example.com</domainName>     <domainHandle>tcs-com-1</domainHandle>     <nameServer       iris:referentType="host"       authority="iana.org" registryType="dreg1"       entityClass="host-handle" entityName="research7" />     <nameServer       iris:referentType="host"       authority="iana.org" registryType="dreg1"       entityClass="host-handle" entityName="nsol184" />     <registry       iris:referentType="registrationAuthority"       authority="com"       registryType="dreg1"       entityClass="contact-handle"       entityName="VGRS" />     <registrar       iris:referentType="registrationAuthority"       authority="iana.org" registryType="dreg1"       entityClass="contact-handle" entityName="dbarton" />Newton & Sanz               Standards Track                     [Page 7]

RFC 3982                       IRIS-Dreg                    January 2005     <initialDelegationDateTime xsi:nil="true"/>   </domain>   The <domain> result represents an instance of a domain assignment.   The children of the <domain> element are as follows:   o  <domainName> -- the full name of the domain as it is in DNS.  The      contents of this element MUST be a domain name as specified byRFC1035 [9].   o  <idn> -- the name of the domain in nameprep form, if applicable.      SeeRFC 3491 [15].   o  <domainHandle> -- a registry unique assigned identifier for a      domain.   o  <nameServer> -- MUST contain an entity reference to a referent of      type <host> (Section 3.2.3).   o  <registrant> -- contains an entity reference to the registrant of      this domain.  The referent MUST be a <contact> result (Section3.2.4).   o  Domain contacts -- the following elements contain an entity      reference with a relationship to the domain.  The referent of each      MUST be a <contact> (Section 3.2.4).      *  <billingContacts>      *  <technicalContacts>      *  <administrativeContacts>      *  <legalContacts>      *  <zoneContacts>      *  <abuseContacts>      *  <securityContacts>      *  <otherContacts>   o  <status> -- This may contain at least one of the following      elements of type 'domainStatusType' (seeSection 3.2.1), but none      of these elements may appear more than once.      *  <reservedDelegation> -- permanently inactive      *  <assignedAndActive> -- normal state      *  <assignedAndInactive> -- registration assigned but delegation         inactive      *  <assignedAndOnHold> -- dispute      *  <revoked> -- database purge pending      *  <transferPending> -- change of authority pending      *  <registryLock> -- on hold by registry      *  <registrarLock> -- on hold by registrarNewton & Sanz               Standards Track                     [Page 8]

RFC 3982                       IRIS-Dreg                    January 2005   o  <domainVariant> -- contains an entity reference, the referent of      which MUST be a <domain> (Section 3.2.2).   o  <registrationReference> -- contains an entity reference, the      referent of which MUST be a <domain> (Section 3.2.2).  This      element is intended to point to the downstream registration      reference.  Therefore, if this is a result given back by a domain      registry, it should point to the domain in the domain registrar or      registrant service.   o  <registry> -- contains an entity reference specifying the domain      registry operator for this domain, which MUST be a      <registrationAuthority> (Section 3.2.5).  This element has an      optional boolean 'hosting' attribute.  When the value of this      attribute is positive, it indicates that the registry is      responsible for authoritatively answering DNS queries for this      domain.   o  <registrar> -- contains an entity reference specifying the domain      registrar operator for this domain, which MUST be a      <registrationAuthority> (Section 3.2.5).  This element has an      optional boolean 'hosting' attribute.  When the value of this      attribute is positive, it indicates that the registrar is      responsible for authoratively answering DNS queries for this      domain.   o  <initialDelegationDateTime> -- contains the date and time of the      initial delegation of this domain.   o  <lastRenewalDateTime> -- contains the date and time of last      renewal of this domain.   o  <expirationDateTime> -- contains the date and time of the      expiration of this domain.   o  <lastContactModificationDateTime> -- specifies the last time a      contact for the domain was added or removed.   o  <lastContactModificationBy> -- contains an entity reference.  The      referent MUST be a <contact> (Section 3.2.4) responsible for the      last addition or removal of a contact for this domain.   o  <lastDelegationModificationDateTime> -- contains the date and time      of the last time one of the nameservers was added or removed for      the delegation of this domain.Newton & Sanz               Standards Track                     [Page 9]

RFC 3982                       IRIS-Dreg                    January 2005   o  <lastDelegationModificationBy> -- contains an entity reference.      The referent MUST be a <contact> result (Section 3.2.4) and MUST      be responsible for the last addition or removal of a nameserver      for this domain.   o  <lastVerificationDateTime> -- contains the date and time of the      last time the data for this domain was verified by the responsible      registration authority.   o  <iris:seeAlso> -- contains an entity reference specifying a      referent indirectly associated with this domain.3.2.3.  <host> Result    An example of a <host> result:   <host     authority="iana.org" registryType="dreg1"     entityClass="host-handle" entityName="nsol184" >     <hostHandle>nsol184</hostHandle>     <hostName>a.iana-servers.net</hostName>     <ipV4Address>192.0.2.43</ipV4Address>     <hostContact       iris:referentType="contact"       authority="iana.org" registryType="dreg1"       entityClass="contact-handle" entityName="dbarton" />   </host>   The <host> element represents an instance of a host registration.   The children of the <host> element are as follows:   o  <hostHandle> -- a registry unique assigned identifier for the      host.   o  <hostName> -- the fully qualified domain name of the host.  The      contents of this element are a domain name and MUST conform toRFC1035 [9].   o  <ipV4Address> -- the content of this MUST conform to the a valid      IP version 4 host address, as specified byRFC 791 [8].   o  <ipV6Address> -- the content of this MUST conform to the a valid      IP version 6 host address, as specified byRFC 3513 [7].   o  <hostContact> -- contains an entity reference specifying a contact      associated with this host.  The referent MUST be <contact>      (Section 3.2.4) results.Newton & Sanz               Standards Track                    [Page 10]

RFC 3982                       IRIS-Dreg                    January 2005   o  <createdDateTime> -- contains the date and time when this host was      created.   o  <lastModificationDateTime> -- contains the date and time when this      host was last modified.   o  <lastVerificationDateTime> -- contains the date and time when this      data for this host was last verified to be correct by the      appropriate registration authority.   o  <iris:seeAlso> -- contains an entity reference specifying a      referent indirectly associated with this host.3.2.4.  <contact> Result   An example of a <contact> result:   <contact     authority="iana.org" registryType="dreg1"     entityClass="contact-handle" entityName="dbarton" >     <contactHandle>dbarton</contactHandle>     <commonName>IANA Manager</commonName>     <organization>Internet Assigned Numbers Authority</organization>     <eMail>res-dom@iana.org</eMail>     <postalAddress>       <address>4676 Admiralty Way, Suite 330</address>       <city>Marina del Rey</city>       <region>CA</region>       <postalCode>92092</postalCode>       <country>US</country>     </postalAddress>     <phone>+1.3108239358</phone>   </contact>   The <contact> element represents an instance of a contact   registration.  The children of the <contact> element are as follows:   o  <contactHandle> -- a registry unique assigned identifier for this      contact.   o  <commonName> -- the name of the contact.   o  <language> -- a specification of the language code to use to      localize the data in this result.   o  <type> -- contains one of the following child elements: <person>,      <organization>, <role>, or <other>.  Each of these elements is a      "contactTypeType" as defined inSection 3.2.1.Newton & Sanz               Standards Track                    [Page 11]

RFC 3982                       IRIS-Dreg                    January 2005   o  <organization> -- contains the organization name of the contact.   o  <eMail> -- contains an e-mail address for this contact.   o  <IDNeMail> -- contains an e-mail address within an      internationalized domain name [14].   o  <sip> -- contains a SIP URI for this contact.   o  <postalAddress> -- contains children representing a postal      address.  <postalAddress> has the following children:      *  <address> -- contains the street address for this contact.      *  <city> -- contains the city for this contact.      *  <region> -- contains the national region for this contact.      *  <postalCode> -- contains the postal code for this contact.      *  <country> -- contains the country for this contact.  This         SHOULD be a two-letter country code compliant with ISO 3166         [11].   o  <phone> -- contains a voice phone number for this contact.  If it      begins with a '+' (plus) character, it MUST be a number defined by      E164 [13].  The format number defined in E164 [13] is RECOMMENDED.   o  <fax> -- contains a facsimile phone number for this contact.  If      it begins with a '+' (plus) character, it MUST be a number defined      by E164 [13].  The format number defined in E164 [13] is      RECOMMENDED.   o  <createdDateTime> -- contains the date and time when this contact      was created.   o  <lastModificationDateTime> -- contains the date and time when this      contact was last modified.   o  <lastVerificationDateTime> -- contains the date and time when this      data for this contact was last verified to be correct by the      appropriate registration authority.   o  <translatedContacts> -- contains an entity reference specifying      equivalents of this contact that have been translated into other      languages.  The referent MUST be <contact> results (Section3.2.4).   o  <iris:seeAlso> -- contains an entity reference specifying a      referent indirectly associated with this contact.Newton & Sanz               Standards Track                    [Page 12]

RFC 3982                       IRIS-Dreg                    January 20053.2.5.  <registrationAuthority>   An example of a <registrationAuthority> result:   <registrationAuthority     authority="iana.org" registryType="dreg1"     entityClass="registration-authority" entityName="iana" >     <serviceInstance       iris:referentType="iris:serviceIdentification"       authority="iana.org" registryType="dreg1"       entityClass="iris" entityName="id" />     <organizationName>       Internet Assigned Numbers Authority     </organizationName>     <registrar />   </registrationAuthority>   The <registrationAuthority> result represents an entity capable of   registering domains.   The <serviceInstance> child element of <registrationAuthority>   contains an entity reference pointing to the entity "id" in the   entity class "iris".  The authority areas found in the referent MUST   be domains for which a given registration authority has control.   The <organizationName> child element contains the name of the   registration authority.   The registration authority type child elements <registry>,   <registrar>, and <other> determine the role this registration   authority plays in the process of registering domains.  This element   is intended to explain the various roles a registration authority may   have in the authority areas pointed to by the <serviceInstance>   element.  A client MAY understand the relationship of a registration   authority with respect to a domain by the placement of the reference   in the domain (e.g., <registry> or <registrar>).   The <domain> child elements each contain one domain name signifying   the domains for which this registration authority may register sub-   domains.3.3.  Generic Code Derivatives3.3.1.  <searchTooWide>   Servers MAY use the <searchTooWide> error code when a query must be   narrowed to yield a result set acceptable under the policies of the   server operator.Newton & Sanz               Standards Track                    [Page 13]

RFC 3982                       IRIS-Dreg                    January 20053.3.2.  <languageNotSupported>   The queries <findDomainsByRegistrant>, <findDomainsByIDNName>, and   <findContacts> support optional language tags that allow a client to   suggest to a server the languages in which to scope the queries.  If   a client passes to the server a language that the server does not   support, the server MAY use this error code to indicate that one of   the languages is not supported.   This element contains child elements named <unsupportedLanguage>.   Each of these child elements specifies a language not supported by   the server.  When a server returns this error, it MUST give the   languages from the query which are not supported.3.4.  Support for <iris:lookupEntity>   The following types of entity classes are recognized by the   <lookupEntity> query of IRIS for this registry:   o  host-name -- The fully qualified domain name of a nameserver.  It      yields a <host> (Section 3.2.3) in the response.   o  host-handle -- The registry unique identifier given a nameserver.      It yields a <host> (Section 3.2.3) in the response.   o  domain-name -- The fully qualified name of a domain.  This a      domain name as specified byRFC 1035 [9].  It yields a <domain>      (Section 3.2.2) in the response.   o  idn -- The fully qualified name of a domain in nameprep form (seeRFC 3491 [15]).  It yields a <domain> (Section 3.2.2) in the      response.   o  domain-handle -- The registry unique identifier given a domain.      It yields a <domain> (Section 3.2.2) in the response.   o  contact-handle -- The registry unique identifier given a contact.      It yields a <contact> (Section 3.2.4) in the response.   o  ipv4-address -- The IPv4 address of a nameserver.  It yields a      <host> (Section 3.2.3) in the response.   o  ipv6-address -- The IPv6 address of a nameserver.  It yields a      <host> (Section 3.2.3) in the response.   o  registration-authority -- The name of a registration authority.      It yields a <registrationAuthority> (Section 3.2.5) in the      response.Newton & Sanz               Standards Track                    [Page 14]

RFC 3982                       IRIS-Dreg                    January 2005   All names in these entity classes are case insensitive.4.  Formal XML Syntax   This registry schema is specified in the XML Schema notation.  The   formal syntax presented here is a complete schema representation   suitable for automated validation of an XML instance when combined   with the formal schema syntax of IRIS.   <?xml version="1.0"?>   <schema xmlns="http://www.w3.org/2001/XMLSchema"     xmlns:dreg="urn:ietf:params:xml:ns:dreg1"     xmlns:iris="urn:ietf:params:xml:ns:iris1"     targetNamespace="urn:ietf:params:xml:ns:dreg1"     elementFormDefault="qualified" >     <import namespace="urn:ietf:params:xml:ns:iris1" />     <annotation>       <documentation>         Domain registry schema         derived from IRIS schema       </documentation>     </annotation>     <!-- ========================================= -->     <!--                                           -->     <!-- Query Types                               -->     <!--                                           -->     <!-- ========================================= -->     <!--                                           -->     <!-- Find Registrars By Name                   -->     <!--                                           -->     <complexType       name="findRegistrarsByNameType">       <complexContent>         <extension           base="iris:queryType">           <sequence>             <element               ref="dreg:baseDomain"               minOccurs="0"               maxOccurs="1" />             <element               name="namePart"               type="dreg:exactOrPartialMatchParameter"Newton & Sanz               Standards Track                    [Page 15]

RFC 3982                       IRIS-Dreg                    January 2005               minOccurs="0"               maxOccurs="1" />           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="findRegistrarsByName"       type="dreg:findRegistrarsByNameType"       substitutionGroup="iris:query" />     <!--                                           -->     <!-- Find Domains By Contact                   -->     <!--                                           -->     <complexType       name="findDomainsByContactType">       <complexContent>         <extension           base="iris:queryType">           <sequence>             <element               ref="dreg:baseDomain"               minOccurs="0"               maxOccurs="1" />             <choice>               <group                 ref="dreg:contactSearchGroup" />               <element                 name="contactHandle"                 type="dreg:exactMatchParameter" />             </choice>             <element               name="role"               minOccurs="0"               maxOccurs="1" >               <simpleType>                 <restriction                   base="string" >                   <enumeration                     value="registrant" />                   <enumeration                     value="billingContact" />                   <enumeration                     value="technicalContact" />                   <enumeration                     value="administrativeContact" />Newton & Sanz               Standards Track                    [Page 16]

RFC 3982                       IRIS-Dreg                    January 2005                   <enumeration                     value="legalContact" />                   <enumeration                     value="zoneContact" />                   <enumeration                     value="abuseContact" />                   <enumeration                     value="securityContact" />                   <enumeration                     value="otherContact" />                 </restriction>               </simpleType>             </element>             <element               name="language"               type="language"               minOccurs="0"               maxOccurs="unbounded"/>           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="findDomainsByContact"       type="dreg:findDomainsByContactType"       substitutionGroup="iris:query" />     <!--                                           -->     <!-- Find Domains By Name                      -->     <!--                                           -->     <complexType       name="findDomainsByNameType">       <complexContent>         <extension           base="iris:queryType">           <sequence>             <element               name="namePart"               type="dreg:partialMatchParameter" />           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="findDomainsByName"Newton & Sanz               Standards Track                    [Page 17]

RFC 3982                       IRIS-Dreg                    January 2005       type="dreg:findDomainsByNameType"       substitutionGroup="iris:query" />     <!--                                           -->     <!-- Find Domains By Internationalized Name    -->     <!--                                           -->     <complexType       name="findDomainsByIDNType">       <complexContent>         <extension           base="iris:queryType">           <sequence>             <element               name="namePart"               type="dreg:exactMatchParameter" />             <element               name="language"               type="language"               minOccurs="0"               maxOccurs="unbounded"/>           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="findDomainsByIDN"       type="dreg:findDomainsByIDNType"       substitutionGroup="iris:query" />     <!--                                           -->     <!-- Find Contacts                             -->     <!--                                           -->     <complexType       name="findContactsType">       <complexContent>         <extension           base="iris:queryType">           <sequence>             <group               ref="dreg:contactSearchGroup" />             <element               name="language"               type="language"               minOccurs="0"               maxOccurs="unbounded"/>Newton & Sanz               Standards Track                    [Page 18]

RFC 3982                       IRIS-Dreg                    January 2005            </sequence>         </extension>       </complexContent>     </complexType>     <element       name="findContacts"       type="dreg:findContactsType"       substitutionGroup="iris:query" />     <!--                                           -->     <!-- Find Domains By Host                      -->     <!--                                           -->     <complexType       name="findDomainsByHostType">       <complexContent>         <extension           base="iris:queryType">           <sequence>             <element               ref="dreg:baseDomain"               minOccurs="0"               maxOccurs="1" />             <choice>               <element                 name="hostName"                 type="dreg:exactMatchParameter" />               <element                 name="hostHandle"                 type="dreg:exactMatchParameter" />               <element                 name="ipV4Address"                 type="dreg:exactMatchParameter" />               <element                 name="ipV6Address"                 type="dreg:exactMatchParameter" />             </choice>           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="findDomainsByHost"       type="dreg:findDomainsByHostType"       substitutionGroup="iris:query" />Newton & Sanz               Standards Track                    [Page 19]

RFC 3982                       IRIS-Dreg                    January 2005     <!--                                           -->     <!-- Contact Search Group                      -->     <!--                                           -->     <group       name="contactSearchGroup">       <choice>         <element           name="commonName"           type="dreg:exactOrPartialMatchParameter" />         <element           name="organization"           type="dreg:exactOrPartialMatchParameter" />         <element           name="eMail"           type="dreg:domainResourceParameter" />         <element           name="city"           type="dreg:exactMatchParameter" />         <element           name="region"           type="dreg:exactMatchParameter" />         <element           name="postalCode"           type="dreg:exactMatchParameter" />       </choice>     </group>     <complexType       name="exactOrPartialMatchParameter">       <choice>         <group           ref="dreg:partialMatchGroup" />         <group           ref="dreg:exactMatchGroup" />       </choice>     </complexType>     <complexType       name="exactMatchParameter">       <group         ref="dreg:exactMatchGroup" />     </complexType>     <complexType       name="partialMatchParameter">       <sequence>         <groupNewton & Sanz               Standards Track                    [Page 20]

RFC 3982                       IRIS-Dreg                    January 2005           ref="dreg:partialMatchGroup" />       </sequence>     </complexType>     <complexType       name="domainResourceParameter" >       <choice>         <group           ref="dreg:exactMatchGroup" />         <element           name="inDomain"           type="token" />       </choice>     </complexType>     <element       name="baseDomain"       type="normalizedString" />     <group       name="partialMatchGroup">       <choice>         <sequence>           <element             name="beginsWith">             <simpleType>               <restriction                 base="token">                 <minLength                   value="1"/>               </restriction>             </simpleType>           </element>           <element             minOccurs="0"             name="endsWith">             <simpleType>               <restriction                 base="token">                 <minLength                   value="1"/>               </restriction>             </simpleType>           </element>         </sequence>         <element           name="endsWith">           <simpleType>Newton & Sanz               Standards Track                    [Page 21]

RFC 3982                       IRIS-Dreg                    January 2005             <restriction               base="token">               <minLength                 value="1"/>             </restriction>           </simpleType>         </element>       </choice>     </group>     <group       name="exactMatchGroup">       <sequence>         <element           name="exactMatch"           type="normalizedString" />       </sequence>     </group>     <!-- ========================================= -->     <!--                                           -->     <!-- Result Types                              -->     <!--                                           -->     <!-- ========================================= -->     <!--                                           -->     <!-- Domain                                    -->     <!--                                           -->     <complexType       name="domainType">       <complexContent>         <extension           base="iris:resultType">           <sequence>             <element               name="domainName"               type="token" />             <element               name="idn"               type="token"               minOccurs="0"               maxOccurs="1" />             <element               name="domainHandle"               type="dreg:normalizedStringPrivacyType"               nillable="true"               minOccurs="0"Newton & Sanz               Standards Track                    [Page 22]

RFC 3982                       IRIS-Dreg                    January 2005               maxOccurs="1" />             <element               name="nameServer"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="registrant"               type="iris:entityType"               minOccurs="0"               maxOccurs="1" />             <element               name="billingContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="technicalContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="administrativeContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="legalContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="zoneContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="abuseContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="securityContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="otherContact"Newton & Sanz               Standards Track                    [Page 23]

RFC 3982                       IRIS-Dreg                    January 2005               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="lastContactModificationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="lastContactModificationBy"               type="iris:entityType"               minOccurs="0"               maxOccurs="1" />             <element               name="status"               minOccurs="0"               maxOccurs="1">               <complexType>                 <all>                   <element                     name="reservedDelegation"                     minOccurs="0"                     maxOccurs="1"                     type="dreg:domainStatusType" />                   <element                     name="assignedAndActive"                     minOccurs="0"                     maxOccurs="1"                     type="dreg:domainStatusType" />                   <element                     name="assignedAndInactive"                     minOccurs="0"                     maxOccurs="1"                     type="dreg:domainStatusType" />                   <element                     name="assignedAndOnHold"                     minOccurs="0"                     maxOccurs="1"                     type="dreg:domainStatusType" />                   <element                     name="revoked"                     minOccurs="0"                     maxOccurs="1"                     type="dreg:domainStatusType" />                   <element                     name="transferPending"                     minOccurs="0"Newton & Sanz               Standards Track                    [Page 24]

RFC 3982                       IRIS-Dreg                    January 2005                     maxOccurs="1"                     type="dreg:domainStatusType" />                   <element                     name="registryLock"                     minOccurs="0"                     maxOccurs="1"                     type="dreg:domainStatusType" />                   <element                     name="registrarLock"                     minOccurs="0"                     maxOccurs="1"                     type="dreg:domainStatusType" />                   <element                     name="other"                     minOccurs="0"                     maxOccurs="1"                     type="dreg:domainStatusType" />                 </all>               </complexType>             </element>             <element               name="domainVariant"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="registrationReference"               type="iris:entityType"               minOccurs="0"               maxOccurs="1" />             <element               name="registry"               minOccurs="0"               maxOccurs="1">               <complexType>                 <complexContent>                   <extension                     base="iris:entityType">                     <attribute                       name="hosting"                       type="boolean" />                   </extension>                 </complexContent>               </complexType>             </element>             <element               name="registrar"               minOccurs="0"Newton & Sanz               Standards Track                    [Page 25]

RFC 3982                       IRIS-Dreg                    January 2005               maxOccurs="1">               <complexType>                 <complexContent>                   <extension                     base="iris:entityType">                     <attribute                       name="hosting"                       type="boolean" />                   </extension>                 </complexContent>               </complexType>             </element>             <element               name="initialDelegationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="lastRenewalDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="expirationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="lastDelegationModificationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="lastDelegationModificationBy"               type="iris:entityType"               minOccurs="0"               maxOccurs="1" />             <element               name="lastVerificationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <elementNewton & Sanz               Standards Track                    [Page 26]

RFC 3982                       IRIS-Dreg                    January 2005               ref="iris:seeAlso"               minOccurs="0"               maxOccurs="unbounded" />           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="domain"       type="dreg:domainType"       substitutionGroup="iris:result" />     <!--                                           -->     <!-- Host                                      -->     <!--                                           -->     <complexType       name="hostType">       <complexContent>         <extension           base="iris:resultType">           <sequence>             <element               name="hostHandle"               type="dreg:normalizedStringPrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="hostName"               type="normalizedString" />             <element               name="ipV4Address"               type="token"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="ipV6Address"               type="token"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="hostContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <elementNewton & Sanz               Standards Track                    [Page 27]

RFC 3982                       IRIS-Dreg                    January 2005               name="createdDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="lastModificationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="lastVerificationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               ref="iris:seeAlso"               minOccurs="0"               maxOccurs="unbounded" />           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="host"       type="dreg:hostType"       substitutionGroup="iris:result" />     <!--                                           -->     <!-- Contact                                   -->     <!--                                           -->     <complexType       name="contactType">       <complexContent>         <extension           base="iris:resultType">           <sequence>             <element               name="contactHandle"               type="dreg:normalizedStringPrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <elementNewton & Sanz               Standards Track                    [Page 28]

RFC 3982                       IRIS-Dreg                    January 2005               name="commonName"               type="dreg:normalizedStringPrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1"/>             <element               name="language"               type="language"               minOccurs="0"               maxOccurs="1" />             <element               name="type"               minOccurs="0"               maxOccurs="1">               <complexType>                 <choice>                   <element                     name="person"                     type="dreg:contactTypeType" />                   <element                     name="organization"                     type="dreg:contactTypeType" />                   <element                     name="role"                     type="dreg:contactTypeType" />                   <element                     name="other"                     type="dreg:contactTypeType" />                 </choice>               </complexType>             </element>             <element               name="organization"               type="dreg:normalizedStringPrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="eMail"               type="dreg:stringPrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="IDNeMail"               type="dreg:stringPrivacyType"               nillable="true"               minOccurs="0"Newton & Sanz               Standards Track                    [Page 29]

RFC 3982                       IRIS-Dreg                    January 2005               maxOccurs="unbounded" />             <element               name="sip"               type="dreg:stringPrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="postalAddress"               minOccurs="0"               maxOccurs="unbounded" >               <complexType>                 <sequence>                   <element                     name="address"                     type="dreg:stringPrivacyType"                     nillable="true"                     minOccurs="0"                     maxOccurs="1" />                   <element                     name="city"                     type="dreg:stringPrivacyType"                     nillable="true"                     minOccurs="0"                     maxOccurs="1" />                   <element                     name="region"                     type="dreg:stringPrivacyType"                     nillable="true"                     minOccurs="0"                     maxOccurs="1" />                   <element                     name="postalCode"                     type="dreg:normalizedStringPrivacyType"                     nillable="true"                     minOccurs="0"                     maxOccurs="1" />                   <element                     name="country"                     type="dreg:tokenPrivacyType"                     nillable="true"                     minOccurs="0"                     maxOccurs="1" />                 </sequence>               </complexType>             </element>             <element               name="phone"Newton & Sanz               Standards Track                    [Page 30]

RFC 3982                       IRIS-Dreg                    January 2005               type="dreg:normalizedStringPrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="fax"               type="dreg:normalizedStringPrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="unbounded" />             <element               name="createdDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="lastModificationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="lastVerificationDateTime"               type="dreg:dateTimePrivacyType"               nillable="true"               minOccurs="0"               maxOccurs="1" />             <element               name="translatedContact"               type="iris:entityType"               minOccurs="0"               maxOccurs="unbounded" />             <element               ref="iris:seeAlso"               minOccurs="0"               maxOccurs="unbounded" />           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="contact"       type="dreg:contactType"       substitutionGroup="iris:result" />     <!--                                           -->Newton & Sanz               Standards Track                    [Page 31]

RFC 3982                       IRIS-Dreg                    January 2005     <!-- Registration Authority                    -->     <!--                                           -->     <complexType       name="registrationAuthorityType">       <complexContent>         <extension           base="iris:resultType">           <sequence>             <element               name="serviceInstance"               type="iris:entityType"               minOccurs="0"               maxOccurs="1" />             <element               name="organizationName"               type="string"               minOccurs="0"               maxOccurs="1" />             <choice               minOccurs="0"               maxOccurs="3">               <element                 name="registry">                 <complexType/>               </element>               <element                 name="registrar">                 <complexType/>               </element>               <element                 name="other">                 <complexType/>               </element>             </choice>             <element               name="domain"               type="token"               minOccurs="0"               maxOccurs="unbounded" />           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="registrationAuthority"       type="dreg:registrationAuthorityType"Newton & Sanz               Standards Track                    [Page 32]

RFC 3982                       IRIS-Dreg                    January 2005       substitutionGroup="iris:result" />     <!--                                           -->     <!-- Privacy Label Types                       -->     <!--                                           -->     <attributeGroup       name="privacyLabelAttributeGroup">       <attribute         name="private"         type="boolean" />       <attribute         name="denied"         type="boolean" />       <attribute         name="doNotRedistribute"         type="boolean" />       <attribute         name="specialAccess"         type="boolean" />     </attributeGroup>     <complexType       name="dateTimePrivacyType">       <simpleContent>         <extension           base="dateTime">           <attributeGroup             ref="dreg:privacyLabelAttributeGroup" />         </extension>       </simpleContent>     </complexType>     <complexType       name="stringPrivacyType">       <simpleContent>         <extension           base="string">           <attributeGroup             ref="dreg:privacyLabelAttributeGroup" />         </extension>       </simpleContent>     </complexType>     <complexType       name="normalizedStringPrivacyType">       <simpleContent>         <extensionNewton & Sanz               Standards Track                    [Page 33]

RFC 3982                       IRIS-Dreg                    January 2005           base="normalizedString">           <attributeGroup             ref="dreg:privacyLabelAttributeGroup" />         </extension>       </simpleContent>     </complexType>     <complexType       name="tokenPrivacyType">       <simpleContent>         <extension           base="token">           <attributeGroup             ref="dreg:privacyLabelAttributeGroup" />         </extension>       </simpleContent>     </complexType>     <complexType       name="domainStatusType">       <sequence>         <element           name="appliedDate"           type="dateTime"           minOccurs="0"           maxOccurs="1" />         <element           name="description"           minOccurs="0"           maxOccurs="unbounded">           <complexType>             <simpleContent>               <extension                 base="string">                 <attribute                   name="language"                   type="language"                   use="required" />               </extension>             </simpleContent>           </complexType>         </element>       </sequence>       <attributeGroup         ref="dreg:privacyLabelAttributeGroup" />       <attribute         name="scope"         type="string" />Newton & Sanz               Standards Track                    [Page 34]

RFC 3982                       IRIS-Dreg                    January 2005     </complexType>     <complexType       name="contactTypeType">       <sequence>         <element           name="description"           minOccurs="0"           maxOccurs="unbounded">           <complexType>             <simpleContent>               <extension                 base="string">                 <attribute                   name="language"                   type="language"                   use="required" />               </extension>             </simpleContent>           </complexType>         </element>       </sequence>       <attributeGroup         ref="dreg:privacyLabelAttributeGroup" />     </complexType>     <!-- ========================================= -->     <!--                                           -->     <!-- Error Codes                               -->     <!--                                           -->     <!-- ========================================= -->     <!--                                           -->     <!-- Search Too Wide                           -->     <!--                                           -->     <element       name="searchTooWide"       type="iris:codeType"       substitutionGroup="iris:genericCode" />     <!--                                           -->     <!-- Language Not Supported                    -->     <!--                                           -->     <complexType       name="languageNotSupportedType">       <complexContent>Newton & Sanz               Standards Track                    [Page 35]

RFC 3982                       IRIS-Dreg                    January 2005         <extension           base="iris:codeType">           <sequence>             <element               name="unsupportedLanguage"               type="language"               minOccurs="1"               maxOccurs="unbounded" />           </sequence>         </extension>       </complexContent>     </complexType>     <element       name="languageNotSupported"       type="dreg:languageNotSupportedType"       substitutionGroup="iris:genericCode" />   </schema>                         Figure 5: dreg.xsd5.  BEEP Transport Compliance   IRIS allows several extensions of the core capabilities.  This   section outlines extensions allowable by IRIS-BEEP [6].5.1.  Message Pattern   This registry type uses the default message pattern described in   IRIS-BEEP [6].5.2.  Server Authentication   This registry type only uses the basic TLS server authentication   method, as described in IRIS-BEEP [6].6.  URI Resolution6.1.  Application Service Label   The application service label associated with this registry type MUST   be "DREG1".  This is the abbreviated form of the URN for this   registry type: urn:ietf:params:xml:ns:dreg1.Newton & Sanz               Standards Track                    [Page 36]

RFC 3982                       IRIS-Dreg                    January 20056.2.  Bottom-Up Resolution   The bottom-up alternative resolution method MUST be identified as   'bottom' in IRIS URI's.   The process for this resolution method differs from the direct-   resolution method if the authority is only a domain name (i.e.,   without the port number).  The process for this condition is as   follows:   1. The IRIS [5] direct-resolution process is tried on the domain name      (e.g., "example.com").   2. If the direct-resolution process yields no server for which a      connection can be made, then the leftmost label of the domain name      is removed, and the first step is repeated again (e.g., "com").   3. If all the labels of the domain name are removed and no server      connections have been made, then the DNS is queried for the      address records corresponding to the original domain name, and the      port used is the well-known port for the default protocol of IRIS.6.3.  Top-Down Resolution   The top-down alternative resolution method MUST be identified as   'top' in IRIS URIs.   The process for this resolution method differs from the direct-   resolution method if the authority is only a domain name (i.e.,   without the port number).  The process for this condition is as   follows:   1. The domain name is reduced to its rightmost label.  This is always      '.'.   2. The IRIS [5] direct-resolution process is tried on the domain      name.   3. If the direct-resolution process yields no server for which a      connection can be made, then the original label to the left of the      rightmost label of the domain name is prepended, and the second      step is repeated again (e.g., if ".", then "com"; if "com", then      "example.com").   4. If all the labels of the original domain are present and no server      connections have been made, then the DNS is queried for the      address records corresponding to the original domain name, and the      port used is the well-known port for the default protocol of IRIS.Newton & Sanz               Standards Track                    [Page 37]

RFC 3982                       IRIS-Dreg                    January 20057.  Internationalization Considerations   Implementers should be aware of considerations for   internationalization in IRIS [5].   This document specifies the lookup of domain names, both the   traditional ASCII form and the IDN form.  In addition, the social   data associated with contacts may also be non-ASCII and could contain   virtually any Unicode character.  The <language> element is provided   in queries that have the potential to traverse such data.  Clients   should use this element to indicate the desired target languages to   the server, and servers should use this element to better enable   normalization and search processes (see [18]).   For clients needing to localize the data tags in this protocol, note   that localization is only needed on the names of XML elements and   attributes with the exception of elements containing date and time   information.  The schema for this registry has been designed so that   clients need not interpret the content of elements or attributes for   localization, other than that of elements containing date and time   information.   Clients should also make use of the <language> elements provided in   many of the results.  Results containing data that may be in Unicode   are accompanied by these elements in order to aid better presentation   of the data to the user.   The "dateTimePrivacyType" element type contains the XML Schema [3]   data type "dateTime".  The contents of this element MUST be specified   by using the 'Z' indicator for Coordinated Universal Time (UTC).8.  IANA Considerations8.1.  XML Namespace URN Registration   This document makes use of a proposed XML namespace and schema   registry specified in XML_URN [16].  Accordingly, the following   registration information is provided for the IANA:      o  URN/URI:         *  urn:ietf:params:xml:ns:dreg1      o  Contact:         *  Andrew Newton <andy@hxr.us>         *  Marcos Sanz <sanz@denic.de>      o  XML:         *  The XML Schema specified inSection 4Newton & Sanz               Standards Track                    [Page 38]

RFC 3982                       IRIS-Dreg                    January 20058.2.  S-NAPTR Registration   The following S-NAPTR application service label has been registered   with IANA according to the IANA considerations defined in IRIS [5]:      DREG18.3.  BEEP Registration   The following BEEP Profile URI has been registered with IANA, in   addition to the registration provided in IRIS-BEEP [6].http://iana.org/beep/iris1/dreg19.  Security Considerations   This document lays out no new considerations for security precautions   beyond that specified in IRIS [5].10.  References10.1.  Normative References   [1]  World Wide Web Consortium, "Extensible Markup Language (XML)        1.0", W3C XML, February 1998, <http://www.w3.org/TR/1998/REC-xml-19980210>.   [2]  World Wide Web Consortium, "Namespaces in XML", W3C XML        Namespaces, January 1999, <http://www.w3.org/TR/1999/REC-xml-names-19990114>.   [3]  World Wide Web Consortium, "XML Schema Part 2: Datatypes", W3C        XML Schema, October 2000, <http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/>.   [4]  World Wide Web Consortium, "XML Schema Part 1: Structures", W3C        XML Schema, October 2000, <http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/>.   [5]  Newton, A. and M. Sanz, "IRIS: The Internet Registry Information        Service (IRIS) Core Protocol",RFC 3981, December 2005.   [6]  Newton, A. and M. Sanz, "Using the Internet Registry Information        Service (IRIS) over the Blocks Extensible Exchange Protocol        (BEEP)",RFC 3983, December 2005.Newton & Sanz               Standards Track                    [Page 39]

RFC 3982                       IRIS-Dreg                    January 2005   [7]  Hinden, R. and S. Deering, "Internet Protocol Version 6 (IPv6)        Addressing Architecture",RFC 3513, April 2003.   [8]  Postel, J., "Internet Protocol", STD 5,RFC 791, September 1981.   [9]  Mockapetris, P., "Domain names - implementation and        specification", STD 13,RFC 1035, November 1987.   [10] Bradner, S., "Key words for use in RFCs to Indicate Requirement        Levels",BCP 14,RFC 2119, March 1997.   [11] International Organization for Standardization, "Codes for the        representation of names of countries, 3rd edition", ISO Standard        3166, August 1988.   [12] Braden, R., "Requirements for Internet Hosts - Application and        Support", STD 3,RFC 1123, October 1989.   [13] International Telecommunications Union, "The International        Public Telecommunication Numbering Plan", ITU-T Recommendation        E.164, 1991.   [14] Faltstrom, P., Hoffman, P., and A. Costello, "Internationalizing        Domain Names in Applications (IDNA)",RFC 3490, March 2003.   [15] Hoffman, P. and M. Blanchet, "Nameprep: A Stringprep Profile for        Internationalized Domain Names (IDN)",RFC 3491, March 2003.   [16] Mealling, M., "The IETF XML Registry",BCP 81,RFC 3688, January        2004.10.2.  Informative References   [17] Newton, A., "Cross Registry Internet Service Protocol (CRISP)        Requirements",RFC 3707, February 2004.URIs   [18] <http://www.unicode.org/reports/tr15/>Newton & Sanz               Standards Track                    [Page 40]

RFC 3982                       IRIS-Dreg                    January 2005Appendix A.  Examples of Requests and Responses   The examples in this section use the string "C:" to denote data sent   by a client to a server and the string "S:" to denote data sent by a   server to a client.A.1.  Example 1   The following is an example of an entity lookup in a dreg1 registry   for the domain-name of 'example.com'.  The response shows the ability   to specify data as being withheld because it is private.   C: <?xml version="1.0"?>   C: <request xmlns="urn:ietf:params:xml:ns:iris1"   C:   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >   C:   C:   <searchSet>   C:   C:     <lookupEntity   C:       registryType="urn:ietf:params:xml:ns:dreg1"   C:       entityClass="domain-name"   C:       entityName="example.com" />   C:   C:   </searchSet>   C:   C: </request>   S: <?xml version="1.0"?>   S: <iris:response xmlns:iris="urn:ietf:params:xml:ns:iris1"   S:   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">   S:   S:   <iris:resultSet>   S:     <iris:answer>   S:   S:       <domain xmlns="urn:ietf:params:xml:ns:dreg1"   S:         authority="iana.org" registryType="dreg1"   S:         entityClass="domain-handle" entityName="example-com-1">   S:   S:         <domainName>example.com</domainName>   S:         <domainHandle>tcs-com-1</domainHandle>   S:   S:         <nameServer iris:referentType="host" authority="iana.org"   S:           registryType="dreg1" entityClass="host-handle"   S:           entityName="research7" />   S:   S:         <nameServer iris:referentType="host" authority="iana.org"   S:           registryType="dreg1" entityClass="host-handle"   S:           entityName="nsol184" />Newton & Sanz               Standards Track                    [Page 41]

RFC 3982                       IRIS-Dreg                    January 2005   S:   S:         <technicalContact iris:referentType="contact"   S:           authority="iana.org" registryType="dreg1"   S:           entityClass="contact-handle" entityName="dbarton" />   S:   S:         <status>   S:           <assignedAndActive denied="true" />   S:         </status>   S:   S:         <registry iris:referentType="registrationAuthority"   S:           authority="com" registryType="dreg1"   S:           entityClass="contact-handle" entityName="VGRS" />   S:   S:         <initialDelegationDateTime xsi:nil="true"/>   S:   S:         <iris:seeAlso iris:referentType="ANY" authority="iana.org"   S:           registryType="dreg1" entityClass="local"   S:           entityName="notice"  />   S:   S:       </domain>   S:   S:     </iris:answer>   S:   </iris:resultSet>   S: </iris:response>                          Figure 6: Example 1A.2.  Example 2   The following is an example of an entity lookup in a dreg1 registry   for the contact-handle of 'mak21'.  The response shows the ability to   specify data as being withheld because it is private.   C: <?xml version="1.0"?>   C: <request xmlns="urn:ietf:params:xml:ns:iris1"   C:   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >   C:   C:   <searchSet>   C:   C:     <lookupEntity   C:       registryType="urn:ietf:params:xml:ns:dreg1"   C:       entityClass="contact-handle"   C:       entityName="mak21" />   C:   C:   </searchSet>   C:   C: </request>   S: <?xml version="1.0"?>Newton & Sanz               Standards Track                    [Page 42]

RFC 3982                       IRIS-Dreg                    January 2005   S: <response xmlns="urn:ietf:params:xml:ns:iris1"   S:   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">   S:   S:   <resultSet>   S:     <answer>   S:   S:       <contact xmlns="urn:ietf:params:xml:ns:dreg1"   S:         authority="com" registryType="dreg1"   S:         entityClass="contact-handle" entityName="mak21" >   S:   S:         <contactHandle>mak21</contactHandle>   S:   S:         <commonName>   S:           Mark Kosters   S:         </commonName>   S:   S:         <organization>   S:           VeriSign, Inc.   S:         </organization>   S:   S:         <eMail>markk@verisignlabs.com</eMail>   S:   S:         <phone private="true" xsi:nil="true" />   S:   S:       </contact>   S:   S:     </answer>   S:   </resultSet>   S:   S: </response>                          Figure 7: Example 2A.3.  Example 3   The following is an example of a domain search based on a   registrant's name beginning with the string 'The Cobbler Shoppe'.   This example also shows the use of bags.   C: <?xml version="1.0"?>   C: <request xmlns="urn:ietf:params:xml:ns:iris1"   C:          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >   C:   C:   <searchSet>   C:   C:     <findDomainsByContact   C:       xmlns="urn:ietf:params:xml:ns:dreg1" >   C:       <baseDomain>com</baseDomain>Newton & Sanz               Standards Track                    [Page 43]

RFC 3982                       IRIS-Dreg                    January 2005   C:       <commonName>   C:         <beginsWith>   C:           The Cobbler Shoppe   C:         </beginsWith>   C:       </commonName>   C:       <role>registrant</role>   C:     </findDomainsByContact>   C:   C:   </searchSet>   C:   C: </request>   S: <?xml version="1.0"?>   S: <response xmlns="urn:ietf:params:xml:ns:iris1"   S:           xmlns:iris="urn:ietf:params:xml:ns:iris1"   S:           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">   S:   S:   <resultSet>   S:     <answer>   S:       <dreg:domain   S:         xmlns="urn:ietf:params:xml:ns:dreg1"   S:         xmlns:dreg="urn:ietf:params:xml:ns:dreg1"   S:         authority="com" registryType="dreg1"   S:         entityClass="domain-handle" entityName="tcs-com-1" >   S:         <domainName>example.com</domainName>   S:         <nameServer   S:           iris:referentType="dreg:host"   S:           authority="com" registryType="dreg1"   S:           entityClass="host-handle" entityName="research7" />   S:         <nameServer   S:           iris:referentType="dreg:host"   S:           authority="com" registryType="dreg1"   S:           entityClass="host-handle" entityName="nsol184" />   S:         <registrant   S:           iris:referentType="dreg:contact"   S:           authority="com" registryType="dreg1"   S:           entityClass="contact-handle" entityName="beb140">   S:           <iris:displayName language="en">   S:             Bill Eckels   S:           </iris:displayName>   S:         </registrant>   S:         <technicalContact   S:           bagRef="x1"   S:           iris:referentType="dreg:contact"   S:           authority="com" registryType="dreg1"   S:           entityClass="contact-handle" entityName="mak21">   S:           <iris:displayName language="en">   S:             Mark KostersNewton & Sanz               Standards Track                    [Page 44]

RFC 3982                       IRIS-Dreg                    January 2005   S:           </iris:displayName>   S:         </technicalContact>   S:         <status>   S:           <transferPending denied="true" />   S:           <assignedAndActive denied="true" />   S:         </status>   S:         <registry   S:           iris:referentType="dreg:registrationAuthority"   S:           authority="com" registryType="dreg1"   S:           entityClass="local" entityName="VRSN"   S:           hosting="false" />   S:         <iris:seeAlso   S:           iris:referentType="ANY"   S:           authority="com" registryType="dreg1"   S:           entityClass="local" entityName="notice" />   S:       </dreg:domain>   S:     </answer>   S:     <additional>   S:       <dreg:contact   S:         xmlns="urn:ietf:params:xml:ns:dreg1"   S:         xmlns:dreg="urn:ietf:params:xml:ns:dreg1"   S:         authority="com" registryType="dreg1"   S:         entityClass="contact-handle" entityName="beb140" >   S:         <contactHandle>beb140</contactHandle>   S:         <commonName>   S:           Bill Eckels   S:         </commonName>   S:         <language>en</language>   S:         <type>   S:           <person>   S:           <description language="en">   S:             Bill sells shoes down by the sea shore.   S:           </description>   S:           <description language="de">   S:            Rechnung verkauft Schuhe unten durch das Seeufer.   S:           </description>   S:           </person>   S:         </type>   S:         <organization>   S:           The Cobbler Shoppe   S:         </organization>   S:         <eMail private="true" xsi:nil="true" />   S:         <postalAddress>   S:           <address>   S:             21 North Main Street   S:           </address>   S:           <city>   S:             BrittNewton & Sanz               Standards Track                    [Page 45]

RFC 3982                       IRIS-Dreg                    January 2005   S:           </city>   S:           <region>   S:             IA   S:           </region>   S:           <postalCode>   S:             50423   S:           </postalCode>   S:           <country>   S:             US   S:           </country>   S:         </postalAddress>   S:         <phone>   S:           +1.5158433521   S:         </phone>   S:       </dreg:contact>   S:       <simpleEntity   S:         authority="com" registryType="dreg1"   S:         entityClass="local" entityName="notice" >   S:         <property name="legal" language="en">   S:           It is illegal to use information from this service   S:           for the purposes of sending unsolicited bulk email.   S:         </property>   S:       </simpleEntity>   S:     </additional>   S:   </resultSet>   S:   <bags>   S:     <bag>   S:       <simpleBag xmlns="http://example.com/">   S:         AAAAB3NzaC1yc2EAAAABIwAAAIEA0ddD+W3Agl0Lel98G1r77fZ   S:         c3nBl8CHdkmKuVGUy/ijmvdO5QxuSlU0R4BoCLZk/Sob22RApTn   S:         T+ROMbXFQBrxGH08daAOy98WqpfAutWJri61JLpubIbaqhGyB48   S:         Qt69V6OhYfFsJjvoNEOh1k2dgzXhSlzP3OMVSKRlBzGcO8=   S:       </simpleBag>   S:     </bag>   S:   </bags>   S:   S: </response>                          Figure 8: Example 3Newton & Sanz               Standards Track                    [Page 46]

RFC 3982                       IRIS-Dreg                    January 2005Appendix B.  An Example of Database Serialization   The following is an example of serializing domain data.   This example shows the serialization of a domain, a host, and a   referral.   <iris:serialization     xmlns:iris="urn:ietf:params:xml:ns:iris1"     xmlns:dreg="urn:ietf:params:xml:ns:dreg1"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">     <dreg:domain       xmlns="urn:ietf:params:xml:ns:dreg1"       authority="com" registryType="dreg1"       entityClass="domain-handle" entityName="tcs-com-1" >       <domainName>example.com</domainName>       <nameServer         iris:referentType="dreg:host"         authority="" registryType="dreg1"         entityClass="host-handle" entityName="research7" />       <nameServer         iris:referentType="dreg:host"         authority="" registryType="dreg1"         entityClass="host-handle" entityName="nsol184" />       <registrant         iris:referentType="dreg:contact"         authority="iana.org" registryType="dreg1"         entityClass="contact-handle" entityName="beb140" />       <technicalContact         iris:referentType="dreg:contact"         authority="net" registryType="dreg1"         entityClass="contact-handle"         entityName="mak21" >         <iris:displayName language="en">           IANA Administrator         </iris:displayName>       </technicalContact>     </dreg:domain>     <dreg:host       xmlns="urn:ietf:params:xml:ns:dreg1"       authority="com" registryType="dreg1"       entityClass="host-handle" entityName="nsol184" >       <hostHandle>nsol184</hostHandle>       <hostName>ns1.iana.org</hostName>       <ipV4Address>192.0.2.1</ipV4Address>       <hostContactNewton & Sanz               Standards Track                    [Page 47]

RFC 3982                       IRIS-Dreg                    January 2005         iris:referentType="dreg:contact"         authority="com" registryType="dreg1"         entityClass="contact-handle"         entityName="dbarton" >         <iris:displayName language="en">           IANA Techie         </iris:displayName>       </hostContact>     </dreg:host>     <iris:serializedReferral>       <iris:source         authority="com" registryType="dreg1"         entityClass="contact-handle"         entityName="dbarton" />       <iris:searchContinuation         authority="net">         <dreg:findRegistrarsByName>           <dreg:baseDomain>com</dreg:baseDomain>         </dreg:findRegistrarsByName>       </iris:searchContinuation>     </iris:serializedReferral>   </iris:serialization>                    Figure 9: dreg-serialization.xmlAppendix C.  Acknowledgements   Many of the concepts concerning the use of SRV records for step-wise   refinement toward finding authoritative servers and many of the   details of result objects in this document were originally created by   Eric A. Hall in his memos regarding the use of LDAP to satisfy the   CRISP requirements.  These concepts have contributed significantly to   the development of this protocol.   David Blacka made many technical contributions based on his work on   IRIS implementation and his experienced judgment.  He also   contributed many editorial clarifications.Newton & Sanz               Standards Track                    [Page 48]

RFC 3982                       IRIS-Dreg                    January 2005Authors' Addresses   Andrew L. Newton   VeriSign, Inc.   21345 Ridgetop Circle   Sterling, VA  20166   USA   Phone: +1 703 948 3382   EMail: anewton@verisignlabs.com; andy@hxr.us   URI:http://www.verisignlabs.com/   Marcos Sanz   DENIC eG   Wiesenhuettenplatz 26   D-60329 Frankfurt   Germany   EMail: sanz@denic.de   URI:http://www.denic.de/Newton & Sanz               Standards Track                    [Page 49]

RFC 3982                       IRIS-Dreg                    January 2005Full Copyright Statement   Copyright (C) The Internet Society (2005).   This document is subject to the rights, licenses and restrictions   contained inBCP 78, and except as set forth therein, the authors   retain all their rights.   This document and the information contained herein are provided on an   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.Intellectual Property   The IETF takes no position regarding the validity or scope of any   Intellectual Property Rights or other rights that might be claimed to   pertain to the implementation or use of the technology described in   this document or the extent to which any license under such rights   might or might not be available; nor does it represent that it has   made any independent effort to identify any such rights.  Information   on the IETF's procedures with respect to rights in IETF Documents can   be found inBCP 78 andBCP 79.   Copies of IPR disclosures made to the IETF Secretariat and any   assurances of licenses to be made available, or the result of an   attempt made to obtain a general license or permission for the use of   such proprietary rights by implementers or users of this   specification can be obtained from the IETF on-line IPR repository athttp://www.ietf.org/ipr.   The IETF invites any interested party to bring to its attention any   copyrights, patents or patent applications, or other proprietary   rights that may cover technology that may be required to implement   this standard.  Please address the information to the IETF at ietf-   ipr@ietf.org.Acknowledgement   Funding for the RFC Editor function is currently provided by the   Internet Society.Newton & Sanz               Standards Track                    [Page 50]

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