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Proposals for Root Zone Label Generation Ruleset

TheLabel Generation Ruleset for the Root Zone is the result of integration of Label Generation Rules (LGR) proposals for different scripts or writing systems, which have been developed by relevant Generation Panels and are successfully evaluated by the Integration Panel.

Overview of the Root Zone LGR Proposal Development Process

Root Zone Label Generation Rules (LGR)

The LGR proposals for the Root Zone, which have been submitted for evaluation, are listed in the table below, along with the proposal documents and their current status.

Final Submission DateScript or Writing SystemFinal Submitted Version for EvaluationCurrent Status
23 May 2025ThaanaProposal [XML, 13 KB,HTML, 69 KB]
Supporting Document [PDF, 998 KB]
Test Labels [TXT, 1 KB]		Pending Integration to the next version of the RZ-LGR.
View thePublic Comment Proceeding.
17 March 2022Myanmar

Proposal [XML, 66 KB,HTML, 244 KB]
Supporting Document [PDF, 1.3 MB]
Test Labels [TXT, 8 KB]

Integrated into RZ-LGR-5. View thePublic Comment Proceeding.
1 February 2022Greek

Proposal [XML, 39 KB,HTML, 280 KB]
Supporting Document [PDF, 794 KB]
Test Labels [TXT, 6 KB]

Integrated into RZ-LGR-5. View thePublic Comment Proceeding.
27 January 2022Latin

Proposal [XML, 117 KB,HTML, 571 KB]
Supporting Document [PDF, 1.8 MB]
Appendices [ZIP, 12 MB]
Test Labels [TXT, 15 KB]

Integrated into RZ-LGR-5. View thePublic Comment Proceeding andGP response.
20 December 2021Japanese

Proposal [XML, 457KB,HTML, 4.7 MB]
Supporting Document [PDF, 389 KB]
Appendices [ZIP, 1.2 MB]
Test Labels[TXT, 11 KB]

Integrated into RZ-LGR-5. View thePublic Comment Proceeding andGP response.

1 May 2021KoreanProposal [XML, 302 KB]
Supporting Document [PDF, 458 KB]
Appendices [ZIP, 3.19 MB]
Test Labels [TXT, 1 KB]

Integrated into RZ-LGR-5. View the secondpublic comment View the firstpublic comment.

26 June 2020MalayalamProposal [XML, 27 KB]
Supporting Document [PDF, 1.02 MB]
Test Labels [TXT, 6 KB]

Integrated into RZ-LGR-4. View thesecond public comment andGP analysis of comments [PDF, 64 KB].

The first version, integrated into RZ-LGR-3:Proposal [XML, 29 KB],
Supporting Document [PDF, 1 MB],
Test Labels [TXT, 8 KB].

View the firstpublic comment andGP analysis of comments [PDF, 137 KB]

26 May 2020Chinese

Proposal [XML, 3.22 MB]
Supporting Document [PDF, 1.95 MB]
Appendices [ZIP, 9.04 MB]
Test Labels [TXT, 9 KB]

Integrated into RZ-LGR-4.
Viewpublic comment.

20 May 2020Bangla

Proposal [XML, 24 KB]
Supporting Document [PDF, 1.8 MB]
Test Labels [TXT, 1 KB]

Integrated into RZ-LGR-4.
Viewpublic comment andGP analysis of comments [PDF, 162 KB]

7 June 2019TeluguProposal [XML, 7 KB]
Supporting Document [PDF, 1.2 MB]
Test Labels [TXT, 8 KB]		Integrated into RZ-LGR-3.
Viewpublic comment andGP analysis of comments [PDF, 75 KB]
24 April 2019HebrewProposal [XML, 7 KB]
Supporting Document [PDF, 403 KB]
Test Labels [TXT, 1 KB]		Integrated into RZ-LGR-3.
Viewpublic comment.
22 April 2019SinhalaProposal [XML, 19 KB]
Supporting Document [PDF, 855 KB]
Test Labels [TXT, 3 KB]		Integrated into RZ-LGR-3.
Viewpublic comment andGP analysis of comments [PDF, 172 KB]
22 April 2019DevanagariProposal [XML, 48 KB]
Supporting Document [PDF, 1.6 MB]
Test Labels [TXT, 58 KB]		Integrated into RZ-LGR-3.
Viewpublic comment andGP analysis of comments [PDF, 157 KB]
22 April 2019GurmukhiProposal [XML, 29 KB]
Supporting Document [PDF, 364 KB]
Test Labels [TXT, 6 KB]		Integrated into RZ-LGR-3.
Viewpublic comment andGP analysis of comments [PDF, 63 KB]
6 March 2019TamilProposal [XML, 14 KB]
Supporting Document [PDF, 2.83 MB]
Test Labels [TXT, 13 KB]		Integrated into RZ-LGR-3.
Viewpublic comment andGP analysis of comments [PDF, 65 KB]
6 March 2019KannadaProposal [XML, 23 KB]
Supporting Document [PDF, 762 KB]
Test Labels [TXT, 6 KB]		Integrated into RZ-LGR-3.
Viewpublic comment andGP analysis of comments [PDF, 50 KB]
6 March 2019OriyaProposal [XML, 17 KB]
Supporting Document [PDF, 1.63 MB]
Test Labels [TXT, 6 KB]		Integrated into RZ-LGR-3.
Viewpublic comment andGP analysis of comments [PDF, 193 KB]
6 March 2019GujaratiProposal [XML, 15 KB]
Supporting Document [PDF, 2.29 MB]
Test Labels [TXT, 8 KB]		Integrated into RZ-LGR-3.
Viewpublic comment andGP analysis of comments [PDF, 34 KB]
3 April 2018Cyrillic

Proposal [XML, 23 KB]
Supporting Document [PDF, 1.2 MB]
Test Labels [TXT, 8 KB]

Integrated into RZ-LGR-5. Viewpublic comment.
25 May 2017ThaiProposal [XML, 15 KB]
Supporting Document [PDF, 1 MB]
Test Labels [TXT, 117 KB]		Integrated into RZ-LGR-2.
Viewpublic comment.
17 May 2017EthiopicProposal [XML, 31 KB]
Supporting Document [PDF, 2.01 MB]
Test Labels [TXT, 2 KB]		Integrated into RZ-LGR-2.
Viewpublic comment.
31 January 2017LaoProposal [XML, 16 KB]
Supporting Document [PDF, 2.2 MB]
Test Labels [TXT, 4 KB]		Integrated into RZ-LGR-2.
Viewpublic comment.
24 November 2016GeorgianProposal [XML, 5 KB]
Supporting Document [PDF, 474 KB]
Test Labels [TXT, 2 KB]		Integrated into RZ-LGR-2.
Viewpublic comment.
15 August 2016KhmerProposal [XML, 20 KB]
Supporting Document [PDF, 3.26 MB]
Test Labels [TXT, 9 KB]		Integrated into RZ-LGR-2.
Viewpublic comment.
18 November 2015ArabicProposal [XML, 31 KB]
Supporting Document [PDF, 3.47 MB]
Test Labels [TXT, 6 KB]		Integrated into RZ-LGR-1.
Viewpublic comment.
5 November 2015Armenian

Proposal [XML, 9 KB]
Supporting Document [PDF, 1.04 MB]
Test Labels [TXT, 1 KB]

Integrated into RZ-LGR-5. Viewpublic comment.
Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as""icann.org"" is not an IDN."
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