Adjacent networks
AS721 DNIC-ASBLK-00721-00726
Unclassified ARIN
Adjacency
Adjacent networks
Every AS seen directly next to AS721 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 771,678 |
| AS27064 | United States Department of Defense (DoD) | Unclassified | IPv4 IPv6 | 605,055 |
| AS27066 | United States Department of Defense (DoD) | Unclassified | IPv4 IPv6 | 80,383 |
| AS27065 | United States Department of Defense (DoD) | Unclassified | IPv4 IPv6 | 72,523 |
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 2026-10-20 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.16M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.