Adjacent networks
AS2603 NORDUNET
Education RIPE
Adjacency
Adjacent networks
Every AS seen directly next to AS2603 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS21320 | GEANT Vereniging | Unclassified | IPv4 IPv6 | 15,388 |
| AS1653 | Vetenskapsradet / SUNET | Unclassified | IPv4 IPv6 | 6,953 |
| AS34549 | meerfarbig GmbH & Co. KG | Hosting | IPv4 IPv6 | 4,674 |
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 3,471 |
| AS1741 | Tieteen tietotekniikan keskus Oy | Unclassified | IPv4 IPv6 | 2,822 |
| AS8501 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | Education | IPv4 IPv6 | 2,721 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 1,787 |
| AS3741 | Dimension Data | Unclassified | IPv4 | 1,653 |
| AS42708 | Glesys AB | Unclassified | IPv4 IPv6 | 1,554 |
| AS224 | Sikt - Kunnskapssektorens Tjenesteleverandor | Unclassified | IPv4 IPv6 | 1,552 |
| AS20514 | Axians AB | Hosting | IPv4 | 1,462 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 1,450 |
| AS49788 | Nexthop AS | Unclassified | IPv4 | 1,433 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 IPv6 | 1,414 |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | Unclassified | IPv4 IPv6 | 1,394 |
| AS6696 | VERIXI SA | Unclassified | IPv4 | 1,383 |
| AS50304 | Blix Solutions AS | Unclassified | IPv4 IPv6 | 1,285 |
| AS56655 | Gigahost AS | Unclassified | IPv4 IPv6 | 1,193 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 972 |
| AS11537 | Internet2 | Unclassified | IPv4 IPv6 | 912 |
| AS1835 | IDDQD-AS | Unclassified | IPv4 IPv6 | 828 |
| AS8674 | Netnod AB | Unclassified | IPv4 IPv6 | 721 |
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. | Transit | IPv4 IPv6 | 653 |
| AS1836 | green.ch AG | Residential | IPv4 IPv6 | 545 |
| AS852 | TELUS Communications Inc. | Residential | IPv4 IPv6 | 519 |
| AS2497 | Internet Initiative Japan Inc. | Unclassified | IPv4 | 496 |
| AS293 | ESnet | Unclassified | IPv4 | 480 |
| AS9002 | RETN Limited | Unclassified | IPv4 IPv6 | 456 |
| AS6461 | Zayo Bandwidth | Transit | IPv4 | 447 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 334 |
| AS33891 | Core-Backbone GmbH | Hosting | IPv4 IPv6 | 333 |
| AS34019 | Hivane Association | Unclassified | IPv4 IPv6 | 326 |
| AS4635 | Hong Kong Internet Exchange--Route Server 1 | Unclassified | IPv4 IPv6 | 294 |
| AS12389 | PJSC Rostelecom | Residential | IPv4 | 284 |
| AS2847 | Kauno Technologijos Universitetas | Education | IPv4 IPv6 | 236 |
| AS20473 | The Constant Company, LLC | Hosting | IPv6 | 226 |
| AS7575 | Australian Academic and Research Network (AARNet) | Education | IPv4 IPv6 | 220 |
| AS15474 | Rannsokna- og haskolanet Islands hf. | Unclassified | IPv4 IPv6 | 214 |
| AS3491 | PCCW Global (HK) Ltd. | Transit | IPv4 IPv6 | 190 |
| AS6830 | Liberty Global Europe Holding B.V. | Residential | IPv4 | 139 |
| AS12552 | GlobalConnect AB | Unclassified | IPv4 | 124 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 IPv6 | 111 |
| AS3221 | Haridus- ja Teadusministeerium | Education | IPv4 IPv6 | 97 |
| AS39590 | NORDUnet | Unclassified | IPv4 IPv6 | 80 |
| AS198093 | Foreningen for digitala fri- och rattigheter | Unclassified | IPv4 IPv6 | 64 |
| AS2914 | NTT America, Inc. | Transit | IPv6 | 60 |
| AS8434 | Telenor Sverige AB | Residential | IPv4 | 54 |
| AS2832 | Vetenskapsradet / SUNET | Education | IPv4 IPv6 | 35 |
| AS1273 | IDDQD-AS | Business | IPv4 IPv6 | 27 |
| AS20965 | GEANT Vereniging | Unclassified | IPv4 IPv6 | 15 |
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 2026-10-16 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.23M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.