asn.dev

Adjacent networks

AS21320 GEANT_IAS_VRF GEANT Vereniging

Unclassified RIPE Educational/Research

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS21320 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2603NORDUnetEducationIPv4 IPv615,121
AS5408National Infrastructures for Research and Technology S.A.EducationIPv4 IPv66,592
AS3356Level 3 Parent, LLCTransitIPv4 IPv64,956
AS1930Fundacao para a Ciencia e a Tecnologia, I.P.UnclassifiedIPv4 IPv64,708
AS174Cogent Communications, LLCTransitIPv4 IPv63,105
AS766Entidad Publica Empresarial Red.esUnclassifiedIPv4 IPv62,627
AS2200RenaterEducationIPv4 IPv62,556
AS6939Hurricane Electric LLCTransitIPv4 IPv62,531
AS9002RETN LimitedUnclassifiedIPv4 IPv62,326
AS378Israel InterUniversity Computation CenterUnclassifiedIPv4 IPv62,073
AS2614Agentia de Administrare a Retelei Nationale de Informatica pentru Educatie si CercetareEducationIPv4 IPv61,916
AS48185team.blue NVUnclassifiedIPv4 IPv61,692
AS8551Bezeq International Ltd.UnclassifiedIPv41,358
AS8501Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterEducationIPv4 IPv61,207
AS6802Bulgarian Research and Education Network Association (BREN)EducationIPv4 IPv61,099
AS2607Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANETEducationIPv4 IPv6977
AS3216PJSC "Vimpelcom"MobileIPv4928
AS2107ARNESUnclassifiedIPv4 IPv6887
AS8517National Academic Network and Information CenterEducationIPv4 IPv6812
AS6879ENSTINETEducationIPv4789
AS1853ACONETUnclassifiedIPv4 IPv6555
AS13092AMRESUnclassifiedIPv4 IPv6546
AS2852CESNET z.s.p.o.EducationIPv4 IPv6539
AS12046University of MaltaUnclassifiedIPv4 IPv6489
AS3303Swisscom (Schweiz) AGResidentialIPv4463
AS2611BELNETEducationIPv4 IPv6462
AS12687User Association of Ukrainian Research and Academic Network URANUnclassifiedIPv4 IPv6408
AS1213ASIERA TECHNOLOGY SERVICES CLGUnclassifiedIPv4 IPv6402
AS1955KIFU (Governmental Info Tech Development Agency)UnclassifiedIPv4 IPv6371
AS6461Zayo BandwidthTransitIPv4 IPv6329
AS2847Kauno Technologijos UniversitetasEducationIPv4 IPv6325
AS559SWITCHUnclassifiedIPv4 IPv6287
AS47623Institute for Informatics and Automation ProblemsUnclassifiedIPv4263
AS513European Organization for Nuclear ResearchUnclassifiedIPv4 IPv6260
AS136968SingARENEducationIPv4257
AS3268of CyprusEducationIPv4 IPv6206
AS2108Croatian Academic and Research NetworkUnclassifiedIPv4 IPv6150
AS44224Macedonian Academic Research Network SkopjeUnclassifiedIPv4 IPv6147
AS137Consortium GARRUnclassifiedIPv4 IPv6145
AS5538Institute of Mathematics and Computer Science of University of LatviaEducationIPv4 IPv6136
AS20965GEANT VerenigingUnclassifiedIPv4 IPv6122
AS2602Fondation RESTENAEducationIPv4 IPv6110
AS9199RENAM Public AssociationEducationIPv4 IPv699
AS199354Arab States Research and Education Network (ASREN) Gemeinnutzige GmbHUnclassifiedIPv4 IPv690
AS40981University of MontenegroUnclassifiedIPv4 IPv682
AS33891Core-Backbone GmbHHostingIPv4 IPv681
AS3208Algerian Academic Research NetworkEducationIPv4 IPv661
AS202993Institute of Information Technologies of National Academy of Science AzerbaijanUnclassifiedIPv435
AS202012GEANT VerenigingUnclassifiedIPv634
AS3221Haridus- ja TeadusministeeriumEducationIPv4 IPv616

Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Derived from routing tables collected at 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.