Adjacent networks
AS55 UPENN
Unclassified ARIN Educational/Research
Adjacency
Adjacent networks
Every AS seen directly next to AS55 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 162 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 126 |
| AS11164 | Internet2 | Education | IPv4 IPv6 | 95 |
| AS69 | University of Pennsylvania | Unclassified | IPv4 | 63 |
| AS11537 | Internet2 | Unclassified | IPv4 IPv6 | 58 |
| AS46274 | Penn Medicine | Unclassified | IPv4 | 28 |
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 2026-10-31 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.50M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.