AS513 European Organization for Nuclear Research

Switzerland CERN RIPE 20 IPv4 prefixes 2 IPv6 prefixes

IPv4 addresses

354,816

IPv6 /48 networks

131,072

RPKI

22 valid0 no ROA

Peers and downstreams

Holder

AS name: CERN
Description: European Organization for Nuclear Research
Organisation: CERN - European Organization for Nuclear Research
Abuse contact: abuse@cern.ch
Assigned: 1992-11-16
Registered: 2001-10-22
Record last changed: 2022-02-17 12:19 UTC

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 85/100

pass	Prefixes covered by valid ROAs 22 of 22 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 2 IPv6 prefixes.	15/15
pass	More than one upstream 6 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@cern.ch is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
fail	Registry record maintained Last changed 2022-02-17.	0/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/513"><img src="https://ip-fd.net/badge/asn/513/health.svg" alt="AS513 network health on IP-FD.net"></a>

Markdown

[![AS513 network health](https://ip-fd.net/badge/asn/513/health.svg)](https://ip-fd.net/asn/513)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 04:05 UTC	Relationship changed	AS6730	upstream to peer
2026-10-04 04:05 UTC	Relationship changed	AS559	upstream to peer
2026-10-04 04:05 UTC	New neighbour	AS34177	peer
2026-10-04 04:05 UTC	Relationship changed	AS30781	upstream to peer
2026-10-04 04:05 UTC	Relationship changed	AS2907	upstream to peer
2026-10-04 04:05 UTC	Relationship changed	AS15576	upstream to peer
2026-10-04 04:05 UTC	Relationship changed	AS1103	upstream to peer

WHOIS

aut-num:        AS513
as-name:        CERN
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        --------- Community Definition -----------
remarks:        513:21357 Prefix to be announced to Akamai
remarks:        513:11344 Prefix to be announced to GCC
remarks:        ------------------------------------------
admin-c:        CERN513
tech-c:         CERN513
status:         LEGACY
mnt-by:         RIPE-NCC-LEGACY-MNT
org:            ORG-CEOf1-RIPE
mnt-by:         CERN-MNT
created:        2001-10-22T15:20:40Z
last-modified:  2022-02-17T12:19:18Z
source:         RIPE
% 158 routing policy lines (import/export) not shown

Routing data

Updated 12 h ago

Registry record

Fetched 12 h ago from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/513

const res = await fetch('https://ip-fd.net/api/v1/asn/513', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/513', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/513');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/513", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

AS174
AS6939	Hurricane Electric LLC HURRICANE
AS20965	GEANT Vereniging GEANT
AS21320	GEANT Vereniging GEANT_IAS_VRF
AS25091	IP-Max SA IP-Max
AS29222	Infomaniak Network SA Infomaniak-AS

AS12654	Reseaux IP Europeens Network Coordination Centre (RIPE NCC) RIPE-NCC-RIS-AS
AS20940	Akamai International B.V. AKAMAI-ASN1
AS21449	Etat de Geneve ETATGE
AS25152	Reseaux IP Europeens Network Coordination Centre (RIPE NCC) K-ROOT-SERVER
AS28810	World Health Organization (WHO) WHO-AS
AS48751	Unog UNOG-AS

AS42
AS293	Esnet ESNET
AS559	SWITCH Switch
AS1103	SURF B.V. SURFNET-NL
AS2018	Tertiary Education and Research Network of South Africa
AS2027	MilkyWan Association MilkyWan
AS2200	Renater FR-RENATER
AS2603	NORDUnet NORDUNET
AS2907	Research Organization of Information and Systems, National Institute of Informatics SINET-AS
AS3856	Packet Clearing House, Inc. PCH-AS
AS6509	CANARIE Inc CANARIE-NTN
AS6730	Sunrise GmbH SUNRISE
AS6776	Internet Services AG THENET TheNet
AS9885	NKN INTERNET GATEWAY NETWORK NKN-INTERNET-GW
AS10764	University of Illinois STARTAP
AS11537	Internet2 INTERNET2-RESEARCH-EDU
AS12333	Cheops Technology Switzerland SA DFINET
AS12350	VTX Services SA VTX-NETWORK
AS13030	Init7 (Switzerland) Ltd. INIT7
AS13335	Cloudflare, Inc. CLOUDFLARENET
AS15169	Google LLC GOOGLE
AS15547	netplus.ch SA NETPLUS
AS15576	NTS workspace AG NTS
AS15796	Salt Mobile SA SALT-CH
AS15830	Equinix (EMEA) Acquisition Enterprises B.V. Equinix
AS17579	KISTI KREONET2-AS-KR-KR
AS20932	Services Industriels de Geneve SIG-ST
AS20940	Akamai International B.V. AKAMAI-ASN1
AS21217	Infrastructure Switzerland Colo Sarl SAFEHOSTNET
AS21449	Etat de Geneve ETATGE
AS22335	Metropolitan Research and Education Network MREN
AS24904	K-Net SAS KWAOO
AS25152	Reseaux IP Europeens Network Coordination Centre (RIPE NCC) K-ROOT-SERVER
AS28810	World Health Organization (WHO) WHO-AS
AS30781	Free Pro SAS JAGUAR-AS
AS33845	Swiss Federation represented by FOITT SWISSGOV
AS34177	Celeste SAS CELESTE-AS
AS43142	ADELI SAS AdeliNovius
AS47176	GAS&COM AG GASCOMCH
AS48751	Unog UNOG-AS
AS59624	National Research Center "Kurchatov Institute" KIAE-COMPUTING-AS
AS60129	CSTI SA CSTI-NET
AS61098	Akenes SA exoscale
AS198330	XEFI LYON SAS Xefi
AS205112	PHILUNET GmbH PHILUNET
AS205845	Planisware SA PLANISWARE
AS213317	SI D ENERGIE ET DE E-COMMUNICATION DE L AIN SIVU SIEA