AS20965 GEANT Vereniging

Netherlands GEANT RIPE 1 IPv4 prefix 2 IPv6 prefixes

IPv4 addresses

8,192

IPv6 /48 networks

131,072

RPKI

3 valid0 no ROA

Peers and downstreams

Holder

AS name: GEANT
Description: The GEANT IP Service The GEANT Network Connects the European National Regional Education Networks (NRENs) together
Organisation: GEANT Vereniging
Registered in: Amsterdam, Netherlands
Abuse contact: cert@geant.org
Assigned: 2001-07-11
Registered: 2002-09-25
Record last changed: 2026-09-08 13:17 UTC

62.40.96.0/19

AS137	Garr ASGARR
AS293	Esnet ESNET
AS297
AS378	Israel InterUniversity Computation Center MACHBA-AS IUCC
AS513	European Organization for Nuclear Research CERN CERN
AS559	SWITCH Switch
AS680	Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. DFN
AS766	Entidad Publica Empresarial Red.es RedIRIS
AS786	Jisc Services Limited JANET
AS1103	SURF B.V. SURFNET-NL
AS1213	ASIERA TECHNOLOGY SERVICES CLG Asiera
AS1853	ACONET ACOnet
AS1930	Fundacao para a Ciencia e a Tecnologia, I.P. RCCN
AS1955	KIFU (Governmental Info Tech Development Agency) HBONE-AS
AS2018	Tertiary Education and Research Network of South Africa
AS2107	ARNES ARNES-NET
AS2108	Croatian Academic and Research Network CARNet-AS
AS2200	Renater FR-RENATER
AS2602	Fondation RESTENA RESTENA
AS2603	NORDUnet NORDUNET
AS2607	Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANET SANET
AS2611	BELNET
AS2614	Agentia de Administrare a Retelei Nationale de Informatica pentru Educatie si Cercetare RoEduNet
AS2847	Litnet LITNET
AS2852	CESNET z.s.p.o. CESNET2
AS2907	Research Organization of Information and Systems, National Institute of Informatics SINET-AS
AS3208	Algerian Academic Research Network
AS3221	Haridus- ja Teadusministeerium EENet-AS
AS3268	of Cyprus University
AS4538	China Education and Research Network Center ERX-CERNET-BKB
AS5408	National Infrastructures for Research and Technology S.A. GR-NET
AS5538	Institute of Mathematics and Computer Science of University of Latvia SigmaNet-NIC
AS6509	CANARIE Inc CANARIE-NTN
AS6802	Bulgarian Research and Education Network Association (BREN) UNICOM-B-AS
AS6878	T-Systems International GmbH AS6878
AS6879	ENSTINET
AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) CSTNET-AS-AP
AS7575	Australian Academic and Research Network (AARNet) AARNET-AS-AP
AS8501	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center PIONIER-AS
AS8517	National Academic Network and Information Center ULAKNET
AS8670	University of Sarajevo UTIC_Autonomus_System
AS8895	King Abdul Aziz City for Science and Technology ISU
AS9199	RENAM Public Association RENAM
AS9264	Net ASNet
AS9885	NKN INTERNET GATEWAY NETWORK NKN-INTERNET-GW
AS11537	Internet2 INTERNET2-RESEARCH-EDU
AS12046	University of Malta ASN-CSC-UOM
AS12687	User Association of Ukrainian Research and Academic Network URAN URAN
AS13092	AMRES UB-AS Akademska mreza Republike Srbije
AS17579	KISTI KREONET2-AS-KR-KR
AS20545	Georgian Research and Educational Networking Association (GRENA) GRENA-AS
AS21274	State Scientific Enterprise 'United Institute of Informatics Problems of National Academy of Sciences of Belarus' (UIIP NASB) BAS-NET-AS
AS23855	Singapore Advanced Research and Education Network SINGAREN-GIX-AS-AP
AS23911	China Next Generation Internet Beijing IX CNGI-BJIX-AS-AP
AS24490	Trans-Eurasia Information Network (TEIN2) - SG TEIN2-SG-AP
AS27750	Cooperacion Latino Americana de Redes Avanzadas AS27750
AS30983	CNRST (Centre National pour la Recherche Scientifique et Technique)
AS34945	Qatar Foundation for Education, Science and Community Development QF-HBKU-ASN
AS36944	Ubuntunet Alliance For Research and Education Networking
AS37288	West and Central African Research Network
AS40981	University of Montenegro UNIVCG
AS44224	Macedonian Academic Research Network Skopje MARnet
AS47623	Institute for Informatics and Automation Problems of National Academy of Sciences of the Republic of Armenia IIAP-ASNET-AS
AS50999	King Abdullah University of Science and Technology KAUST-AS1
AS57961	Rash-As Rash RASH-AS RASH
AS134148	SingAREN SINGAREN-GIX-AS-AP-2
AS136968	SingAREN SINGAREN-GIX-AS-AP
AS137207	Joint Universities Computer Centre Limited JUCC-AS-AP
AS198562	University of Mostar SUM-AS
AS199354	Arab States Research and Education Network (ASREN) Gemeinnutzige GmbH ASREN
AS202993	Institute of Information Technologies of National Academy of Science Azerbaijan IIT
AS206350	Oman Research and education Network (OMREN) OMREN
AS211080	Ministry of Economy of Republic of Kosovo KREN-ASN

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

pass	Prefixes covered by valid ROAs 3 of 3 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 5 upstreams seen in BGP.	10/10
pass	Working abuse contact cert@geant.org 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
pass	Registry record maintained Last changed 2026-09-08.	5/5

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/20965"><img src="https://ip-fd.net/badge/asn/20965/health.svg" alt="AS20965 network health on IP-FD.net"></a>

Markdown

[![AS20965 network health](https://ip-fd.net/badge/asn/20965/health.svg)](https://ip-fd.net/asn/20965)

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

Routing changes

Last 30 days

2026-10-04 14:45 UTC	New neighbour	AS4538	downstream
2026-10-04 14:45 UTC	New neighbour	AS23911	downstream

WHOIS

aut-num:        AS20965
as-name:        GEANT
org:            ORG-DLCU1-RIPE
descr:          The GEANT IP Service
descr:          The GEANT Network Connects the European National Regional Education Networks (NRENs) together
remarks:        GEANT Research and Education Network
remarks:        
remarks:        === BEGIN === INFORMATION ==========================================================
remarks:        NREN routes are marked with an informational community based on ASN.
remarks:        
remarks:        20965:<ASN> For 2-byte ASNs
remarks:        origin:<ASN>:20965 For 4-byte ASNs
remarks:        
remarks:        NRENs can block advertisements to other NRENs using a specific block community.
remarks:        
remarks:        64512:<ASN> For 2-byte destination ASNs
remarks:        origin:<ASN>:64512 For 4-byte destination ASNs
remarks:        
remarks:        NRENs are welcome to use specific communities to define how routes are advertised to R&E peers
remarks:        R&E Peers participate in the exchange of R&E traffic but are not part of the GEANT consortium
remarks:        Prepending is additive, combine communities to increase prepending.
remarks:        
remarks:        20965:0000 - Don't announce the routes to all R&E Peers
remarks:        20965:0010 - Prepend GEANT AS one time towards all R&E Peers
remarks:        20965:0020 - Prepend GEANT AS two times towards all R&E Peers
remarks:        20965:0030 - Prepend GEANT AS three times towards all R&E Peers
remarks:        20965:0060 - Prepend GEANT AS six times towards all R&E Peers
remarks:        
remarks:        Routes can be manipulated using per-peer communities
remarks:        Penultimate digit is used to govern route action
remarks:        20965:...0. - Block advertisement to R&E Peer
remarks:        20965:...1. - Prepend GEANT AS one time towards to R&E Peer
remarks:        20965:...2. - Prepend GEANT AS two times towards to R&E Peer
remarks:        20965:...3. - Prepend GEANT AS three times towards to R&E Peer
remarks:        20965:...6. - Prepend GEANT AS six times towards to R&E Peer
remarks:        
remarks:        20965:20.0 - SINET
remarks:        20965:30.0 - CANARIE
remarks:        20965:45.0 - UbuntuNet
remarks:        20965:50.0 - Internet2
remarks:        20965:60.0 - ESnet
remarks:        20965:80.0 - RedCLARA
remarks:        20965:85.0 - NISN
remarks:        20965:90.0 - TEIN
remarks:        20965:120.0 - SARInet/KAUST
remarks:        20965:150.0 - ASREN
remarks:        20965:160.0 - KREONET
remarks:        20965:170.0 - NKN
remarks:        20965:180.0 - IRANET
remarks:        20965:190.0 - OMREN
remarks:        20965:200.0 - KIAE
remarks:        20965:210.0 - SingAREN
remarks:        20965:220.0 - WACREN
remarks:        20965:230.0 - HBKU
remarks:        20965:240.0 - Maaen
remarks:        20965:250.0 - ANKABUT
remarks:        20965:260.0 - TENET
remarks:        20965:270.0 - NIKS
remarks:        20965:280.0 - UTIC
remarks:        20965:290.0 - T-SYSTEMS
remarks:        20965:300.0 - CSTNET
remarks:        20965:310.0 - CAREN
remarks:        20965:320.0 - AARNet
remarks:        20965:330.0 - ESTINET
remarks:        20965:340.0 - MARWAN
remarks:        20965:350.0 - HARNET
remarks:        20965:360.0 - ARN
remarks:        20965:370.0 - ASNET-TW
remarks:        20965:380.0 - SUM
remarks:        20965:390.0 - CERNET
remarks:        20965:400.0 - CNGI-6IX
remarks:        
remarks:        20965:0008 - RTBH service, /32 and /128 prefixes only
remarks:        20965:0001 - Routes heard with suspected commercial ASNs in the path.
remarks:        20965:0002 - Anycast Routing
remarks:        Anycast routes are identified by a prefix list and community filter and the local preference raised on backup links.
remarks:        NRENs who add this community will see no effect unless they also instruct us to add the route to our prefix-list.
remarks:        20965:0007 - Global Anycast Routing (Incl. DNS root servers)
remarks:        Global anycast routes are marked with the above community and accepted from NRENs.
remarks:        
remarks:        ===============
remarks:        R&E Peer Traffic Engineering
remarks:        ===============
remarks:        Peers are marked with the informational community 20965:65530
remarks:        
remarks:        Peers eligible for backup transit arrangements can announce prefixes to other R&E peers like so:
remarks:        64700:<ASN> For 2-byte ASNs
remarks:        origin:<ASN>:64700 For 4-byte ASNs
remarks:        
remarks:        20965:0007 - Global Anycast Routing (Incl. DNS root servers)
remarks:        Global anycast routes are rejected from R&E peers.
remarks:        
remarks:        === END === INFORMATION ==========================================================
remarks:        
remarks:        ===============
remarks:        GEANT R&E
remarks:        ===============
remarks:        Internal internal prefixes are given community 20965:155
remarks:        
remarks:        GEANT NRENs - National Regional Educational Networks
remarks:        NREN prefixes are given a LOCAL-PREF of 150 and community 20965:155
remarks:        
remarks:        AS7500 (DNS root name-server) is behind RENATER
remarks:        
remarks:        
remarks:        GEANT PEERS - non-NRENs who receive NREN routes:
remarks:        All Peers are accepted with a LOCAL-PREF of 100
remarks:        
remarks:        The following ASs are our non-NREN peers who receive NREN routes. All peers get all routes from AS-GEANTNRN and a subset of AS-GEANTNRENPEERS based on the agreed transit policy as highlighted by the communities below.
admin-c:        EJA2-RIPE
tech-c:         DANT-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         DANTE-MNT
created:        2002-09-25T09:03:02Z
last-modified:  2026-09-08T13:17:09Z
source:         RIPE
% 140 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now 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/20965

const res = await fetch('https://ip-fd.net/api/v1/asn/20965', {
  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/20965', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/20965');
curl_setopt($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/20965", 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))

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