asn.dev

Adjacent networks

AS399143 4CEPA-FASTNET - 4-County Electric Power Association

Unclassified ARIN

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS399143 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3257GTT Communications Inc.TransitIPv4 IPv61,302
AS394542MS Fiber, LLCUnclassifiedIPv4 IPv6662

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 2026-11-04 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.33M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.