Adjacent networks
AS21737 SPRINGNET2-NET
Unclassified RIPE NSP
Adjacency
Adjacent networks
Every AS seen directly next to AS21737 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 525 |
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 472 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 | 331 |
| AS63051 | Critical Hosting Solutions LLC | Hosting | IPv4 IPv6 | 322 |
| AS393977 | Great Southern Bank | Unclassified | IPv4 | 116 |
| AS33252 | Bass Pro, LLC. | Unclassified | IPv4 | 74 |
| AS11826 | Regional Information Sharing Systems | Unclassified | IPv4 | 58 |
| AS21835 | Scarsdale Security Systems, Inc. | Unclassified | IPv4 | 58 |
| AS30628 | SRC Automotive Inc. | Unclassified | IPv4 | 58 |
| AS20296 | EXPEDIA, INC | Unclassified | IPv4 | 34 |
| AS34927 | iFog GmbH | Hosting | IPv4 IPv6 | 2 |
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 2026-10-12 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.21M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.