asn.dev

Observed topology

AS40264 TWC-40264-WI-MN-UPPERMI-C3

Unclassified APNIC

Upstreams 2 carry this network
Downstreams 139 this network carries
Adjacent (IPv4) 140
Adjacent (IPv6) 11
Upstream graph Who carries AS40264, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS40264 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS40264: 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 IncResidentialIPv4 IPv6641
AS20115Charter Communications LLCResidentialIPv4 IPv6629

Transit

Downstream networks

All 139

Networks for which AS40264 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS21554Wisconsin CyberLynk Network, Inc.HostingIPv4967
AS25958Marshfield Clinic Inc.UnclassifiedIPv4500
AS22809American Family InsuranceUnclassifiedIPv4473
AS16399First Communications LLCUnclassifiedIPv4386
AS22223MVTV WirelessUnclassifiedIPv4 IPv6373
AS13567Kimberly-Clark CorporationUnclassifiedIPv4351
AS33395RMM Solutions IncUnclassifiedIPv4330
AS32149WEBTEAM, INCUnclassifiedIPv4315
AS14440Citon Computer CorpUnclassifiedIPv4 IPv6298
AS23039Bell Ambulance, Inc.UnclassifiedIPv4244

All 139 downstreams →

Adjacency

Adjacent networks

All 141

Every AS seen directly next to AS40264 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS20115Charter Communications LLCResidentialIPv4 IPv67,521
AS10796Charter Communications IncResidentialIPv4 IPv66,612
AS21554Wisconsin CyberLynk Network, Inc.HostingIPv4967
AS25958Marshfield Clinic Inc.UnclassifiedIPv4500
AS22809American Family InsuranceUnclassifiedIPv4473
AS16399First Communications LLCUnclassifiedIPv4386
AS22223MVTV WirelessUnclassifiedIPv4 IPv6373
AS13567Kimberly-Clark CorporationUnclassifiedIPv4351
AS33395RMM Solutions IncUnclassifiedIPv4330
AS32149WEBTEAM, INCUnclassifiedIPv4315

All 141 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-30 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.49M 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.