- Registered on
- 22 Oct 2001 (24 years old)
- Registered to
- ch.cern (ripe)
- Network status
- Active, Allocated under RIPE
- Network type
- Content
- Prefixes Originated
- 20 IPv4, 2 IPv6
Upstreams
Rankings
| Prefix | Description | |
|---|---|---|
  | 128.141.0.0/16 | CERN Campus dynamic addresses |
 | 128.142.0.0/16 | RIPE Network Coordination Centre |
| 137.138.0.0/16 | CERN Campus Network |
| 185.249.56.0/22 | CERN - European Organization for Nuclear Research |
| 188.184.0.0/16 | - |
| 188.185.0.0/16 | - |
| 192.16.155.0/24 | CH-1211 Geneva 23, Switzerland |
| 192.16.156.0/22 | CH-1211 Geneva 23, Switzerland |
| 192.16.160.0/22 | CH-1211 Geneva 23, Switzerland |
| 192.16.164.0/23 | RIPE Network Coordination Centre |
| 192.16.166.0/24 | RIPE Network Coordination Centre |
| 192.65.183.0/24 | CH-1211 Geneva 23 - Switzerland |
| 192.65.184.0/21 | RIPE Network Coordination Centre |
| 192.65.192.0/22 | RIPE Network Coordination Centre |
| 192.65.196.0/23 | RIPE Network Coordination Centre |
| 192.91.236.0/22 | CH-1211 Geneva 23, Switzerland |
| 192.91.240.0/22 | RIPE Network Coordination Centre |
| 192.91.244.0/23 | CH-1211 Geneva 23, Switzerland |
| 192.91.246.0/24 | CH-1211 Geneva 23, Switzerland |
| 194.12.128.0/18 | CH-1211 Geneva 23, Switzerland |
| 2001:1458::/32 | CERN - European Organization for Nuclear Research |
| 2001:1459::/32 | CERN - European Organization for Nuclear Research |
Network Policy
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Prefixes in selected policy
How are upstreams and downstreams calculated?
Upstreams
| ASN | Description | IPv4 | IPv6 | |
|---|---|---|---|---|
| AS29222 | Infomaniak Network SA | ✔ | ✔ |
 | AS174 | Cogent Communications, LLC | ✔ | ✔ |
| AS25091 | IP-Max SA | ✔ | ✔ |
| AS21320 | GEANT Vereniging | ✔ | ✔ |
| AS6730 | Sunrise GmbH | ✔ | ✔ |
Peers
| ASN | Description | IPv4 | IPv6 | |
|---|---|---|---|---|
| AS25091 | IP-Max SA | ✔ | ✔ |
| AS21320 | GEANT Vereniging | ✔ | ✔ |
| AS29222 | Infomaniak Network SA | ✔ | ✔ |
| AS174 | Cogent Communications, LLC | ✔ | ✔ |
| AS20940 | Akamai International B.V. | ✔ | ✔ |
| AS12654 | RIPE NCC - RIS | ✔ | ✔ |
 | AS48751 | United Nations Logistics Base | ✔ | ✘ |
| AS28810 | World Health Organization (WHO) | ✔ | ✘ |
| AS6939 | Hurricane Electric LLC | ✔ | ✘ |
| AS21449 | Etat de Genève (Canton of Geneva) | ✔ | ✔ |
| AS6730 | Sunrise GmbH | ✔ | ✔ |
 | AS2907 | Science Information Network | ✔ | ✘ |
| AS20965 | GEANT Vereniging | ✔ | ✔ |
| AS25152 | RIPE NCC - K-root | ✔ | ✔ |
 | AS6509 | CANARIE Inc | ✔ | ✔ |
| AS13030 | Init7 (Switzerland) Ltd. | ✔ | ✔ |
| AS293 | ESnet | ✔ | ✔ |
| AS1103 | SURF B.V. | ✔ | ✔ |
| AS559 | SWITCH | ✔ | ✔ |
 | AS2027 | MilkyWan | ✔ | ✔ |
| AS15576 | NTS workspace AG | ✔ | ✔ |
| AS30781 | Free Pro SAS | ✘ | ✔ |
 | AS4455 | IX Reach Ltd | ✔ | ✘ |
Downstreams
| ASN | Description | IPv4 | IPv6 | |
|---|---|---|---|---|
| AS20940 | Akamai International B.V. | ✔ | ✔ |
| AS12654 | RIPE NCC - RIS | ✘ | ✔ |
| AS21449 | Etat de Genève (Canton of Geneva) | ✔ | ✔ |
| AS48751 | United Nations Logistics Base | ✔ | ✘ |
| AS28810 | World Health Organization (WHO) | ✔ | ✘ |
| AS25152 | RIPE NCC - K-root | ✔ | ✔ |
aut-num:AS513as-name: CERNremarks:import: fromAS174 accept ANYimport: fromAS293 accept ANYimport: fromAS297 accept ANYimport: fromAS559 accept ANYimport: fromAS1103 acceptAS1103import: fromAS1297 accept ANYimport: fromAS2200 accept ANYimport: fromAS2603 accept ANYimport: fromAS2697 acceptAS2697import: fromAS3303 acceptAS-SWCMGLOBALimport: fromAS6509 accept ANYimport: fromAS6730 accept ANYimport: fromAS6830 acceptAS-AORTAimport: fromAS6830 accept ANYimport: fromAS6853 acceptAS-EQUANT-SOUTHEURimport: fromAS6939 acceptAS6939import: fromAS8674 acceptAS-NETNOD-ANYCASTimport: fromAS9885 acceptAS9885import: fromAS10764 accept ANYimport: fromAS11344 acceptAS11344import: fromAS11537 accept ANYimport: fromAS12333 acceptAS-DFIimport: fromAS12350 acceptAS-VTXimport: fromAS12654 acceptAS12654import: fromAS13030 acceptAS13030import: fromAS13238 acceptAS13238import: fromAS15169 acceptAS-GOOGLEimport: fromAS15547 acceptAS15547import: fromAS17579 acceptAS17579import: fromAS20932 acceptAS-IP-MANimport: fromAS20965 accept ANYimport: fromAS21320 accept ANYimport: fromAS21357 accept not anyimport: fromAS22335 accept ANYimport: fromAS24167 acceptAS24167import: fromAS24904 acceptAS24904import: fromAS25091 accept ANYimport: fromAS25152 acceptAS25152import: fromAS28810 acceptAS28810import: fromAS29222 acceptAS29222:AS-INFOMANIAKimport: fromAS30781 acceptAS-JAGUARimport: fromAS32361 acceptAS32361import: fromAS33845 acceptAS-SWISSGOVimport: fromAS43115 acceptAS43115import: fromAS43142 acceptAS-ADELINOVIUSimport: fromAS48751 acceptAS48751import: fromAS57859 accept ANYimport: fromAS59624 acceptAS59624remarks:export: toAS174 announceAS-CERNEXTexport: toAS293 announceAS-CERNEXTexport: toAS297 announceAS-CERNEXTexport: toAS559 announceAS-CERNEXTexport: toAS1103 announceAS-CERNEXTexport: toAS1297 announceAS-CERNEXTexport: toAS2200 announceAS-CERNEXTexport: toAS2603 announceAS-CERNEXTexport: toAS2697 announceAS-CERNEXTexport: toAS3303 announceAS-CERNEXTexport: toAS6509 announceAS-CERNEXTexport: toAS6730 announceAS-CERNEXTexport: toAS6830 announceAS-CERNEXTexport: toAS6853 announceAS-CERNEXTexport: toAS6939 announceAS-CERNEXTexport: toAS8674 announceAS-CERNEXTexport: toAS9885 announceAS-CERNEXTexport: toAS10764 announceAS-CERNEXTexport: toAS11344 announce community(513:11344)export: toAS11537 announceAS-CERNEXTexport: toAS12333 announceAS-CERNEXTexport: toAS12350 announceAS-CERNEXTexport: toAS12654 announce ANYexport: toAS13030 announceAS-CERNEXTexport: toAS13238 announceAS-CERNEXTexport: toAS15169 announceAS-CERNEXTexport: toAS15547 announceAS-CERNEXTexport: toAS17579 announceAS-CERNEXTexport: toAS20932 announceAS-CERNEXTexport: toAS20965 announceAS-CERNEXTexport: toAS21320 announceAS-CERNEXTexport: toAS21357 announce community(513:21357)export: toAS22335 announceAS-CERNEXTexport: toAS24167 announceAS-CERNEXTexport: toAS24904 announceAS-CERNEXTexport: toAS25091 announceAS-CERNEXTexport: toAS25152 announce {0.0.0.0/0}export: toAS28810 announce {0.0.0.0/0}export: toAS29222 announceAS-CERNEXTexport: toAS30781 announceAS-CERNEXTexport: toAS32361 announceAS-CERNEXTexport: toAS33845 announceAS-CERNEXTexport: toAS43115 announceAS-CERNEXTexport: toAS43142 announceAS-CERNEXTexport: toAS48751 announce ANYexport: toAS59624 announceAS-CERNEXTremarks:mp-import: afi ipv6.unicast fromAS174 accept ANYmp-import: afi ipv6.unicast fromAS293 accept ANYmp-import: afi ipv6.unicast fromAS297 accept ANYmp-import: afi ipv6.unicast fromAS559 accept ANYmp-import: afi ipv6.unicast fromAS1103 accept ANYmp-import: afi ipv6.unicast fromAS2200 accept ANYmp-import: afi ipv6.unicast fromAS2603 accept ANYmp-import: afi ipv6.unicast fromAS6509 accept ANYmp-import: afi ipv6.unicast fromAS6730 accept ANYmp-import: afi ipv6.unicast fromAS6830 accept ANYmp-import: afi ipv6.unicast fromAS6853 acceptAS-EQUANT-SOUTHEURmp-import: afi ipv6.unicast fromAS6939 acceptAS6939mp-import: afi ipv6.unicast fromAS8674 acceptAS-NETNOD-ANYCASTmp-import: afi ipv6.unicast fromAS9885 accept ANYmp-import: afi ipv6.unicast fromAS11344 acceptAS11344mp-import: afi ipv6.unicast fromAS12654 acceptAS12654mp-import: afi ipv6.unicast fromAS13030 acceptAS13030mp-import: afi ipv6.unicast fromAS13238 acceptAS13238mp-import: afi ipv6.unicast fromAS15169 acceptAS-GOOGLEmp-import: afi ipv6.unicast fromAS15547 acceptAS15547mp-import: afi ipv6.unicast fromAS17579 acceptAS17579mp-import: afi ipv6.unicast fromAS20932 acceptAS-IP-MANmp-import: afi ipv6.unicast fromAS20965 accept ANYmp-import: afi ipv6.unicast fromAS21320 accept ANYmp-import: afi ipv6.unicast fromAS24167 acceptAS24167mp-import: afi ipv6.unicast fromAS24904 acceptAS24904mp-import: afi ipv6.unicast fromAS25091 accept ANYmp-import: afi ipv6.unicast fromAS25152 acceptAS25152mp-import: afi ipv6.unicast fromAS30781 acceptAS-JAGUARmp-import: afi ipv6.unicast fromAS43115 accept ANYmp-import: afi ipv6.unicast fromAS57859 accept ANYmp-import: afi ipv6.unicast fromAS59624 acceptAS59624remarks:mp-export: afi ipv6.unicast toAS174 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS293 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS297 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS559 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS1103 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS2200 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS2603 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS6509 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS6730 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS6830 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS6853 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS6939 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS8674 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS9885 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS11344 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS12654 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS13030 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS13238 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS15169 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS15547 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS17579 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS20932 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS20965 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS21320 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS24167 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS24904 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS25091 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS25152 announce {::0/0}mp-export: afi ipv6.unicast toAS30781 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS43115 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS57859 announceAS-CERNEXTmp-export: afi ipv6.unicast toAS59624 announceAS-CERNEXTremarks: --------- Community Definition -----------remarks: 513:21357 Prefix to be announced to Akamairemarks: 513:11344 Prefix to be announced to GCCremarks: ------------------------------------------admin-c: DUMY-RIPEtech-c: DUMY-RIPEstatus: LEGACYmnt-by: RIPE-NCC-LEGACY-MNTnotify: extip@cern.chorg:ORG-CEOf1-RIPEmnt-by: CERN-MNTcreated: 2001-10-22T15:20:40Zlast-modified: 2022-02-17T12:19:18Zsource: RIPEremarks: ****************************remarks: * THIS OBJECT IS MODIFIEDremarks: * Please note that all data that is generally regarded as personalremarks: * data has been removed from this object.remarks: * To view the original object, please query the RIPE Database at:remarks: * http://www.ripe.net/whoisremarks: ****************************organisation:ORG-CEOf1-RIPEorg-name: CERN - European Organization for Nuclear Researchcountry: CHorg-type: LIRaddress: Dummy address forORG-CEOf1-RIPE# Email removed, Log into bgp.tools to see whois emailsabuse-c: CERN513mnt-ref: RIPE-NCC-HM-MNTmnt-ref: CERN-MNTmnt-by: RIPE-NCC-HM-MNTmnt-by: CERN-MNTcreated: 2004-04-17T11:02:00Zlast-modified: 2021-06-29T07:00:23Zsource: RIPEremarks: ****************************remarks: * THIS OBJECT IS MODIFIEDremarks: * Please note that all data that is generally regarded as personalremarks: * data has been removed from this object.remarks: * To view the original object, please query the RIPE Database at:remarks: * http://www.ripe.net/whoisremarks: ****************************Last Update: 2025-11-25T03:24:52Z UTC
Member of the following AS-SETs
| - | Member |
|---|---|
| RADB | as-startapca |
| RADB | as-startapna |
| LEVEL3 | as-level3-origins-eu |
| LEVEL3 | as-sprint-origins |
| RIPE | as513:as-cern-isp |
| ALTDB | as51202:as-all |
| RIPE | as24904:as-cixp-peers |
| RADB | as-hurricanev6 |
| RIPE | as-fibrelac:as-cixp-standard |
| RIPE | as-level3-ipv6 |
| RIPE | as25091:as-downstreams |
| RIPE | as-green-ipv6-peers |
| RIPE | as-cern |
| RADB | as-startapru |
| RIPE | as3303:as-swcmpeers |
| RIPE | as-swcmchpeers |
| RIPE | as-renater |
| RIPE | as-transroute-spec |
| LEVEL3 | as-level3-customers-eu |
| RADB | as-10099 |
| RIPE | as-global |
| RIPE | as-liecomtel-peers |
| RIPE | as-scheringnrns |
| ARIN | as293:as-from-starlight-to-esnet |
| RADB | as-startapla |
| RIPE | as25091:as-peers |
| RADB | as-startapcn |
| RIPE | as-opentransit |
| RADB | as-startapap |
| RIPE | as15547:as-peers |
| RIPE | as20932:as-peering |
| RIPE | as-national |
| RIPE | as-cixp-rs-as57859 |
| RIPE | as-cernusa |
| RIPE | as513:as-cern-nren |
| RIPE | as-ris-rrc04 |
| RIPE | as-gblxeu |
| RADB | as-startapme |
| RIPE | as-telecom-peers |
| RIPE | as-cernext |
- PeeringDB AS-SET:
- AS-CERNEXT
- Suggested Prefix Limits
IPv4: 100
IPv6: 30