asn.dev

Observed topology

AS54676 MDC-AS01

Unclassified ARIN

Upstreams 4 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 5
Adjacent (IPv6) 0
Upstream graph Who carries AS54676, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS54676 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS54676: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS10796Charter Communications IncResidentialIPv4118
AS3356Level 3 Parent, LLCTransitIPv4115
AS7018AT&T Enterprises, LLCResidentialIPv417
AS3112OARnetEducationIPv45

Transit

Downstream networks

inferred

Networks for which AS54676 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS26957SSG OHIOUnclassifiedIPv4124

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS54676 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS10796Charter Communications IncResidentialIPv4181
AS3356Level 3 Parent, LLCTransitIPv4172
AS26957SSG OHIOUnclassifiedIPv4124
AS7018AT&T Enterprises, LLCResidentialIPv421
AS3112OARnetEducationIPv45

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-28 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.

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you. 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.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.