Observed topology

AS33588 BRESNAN-33588

Unclassified ARIN

Upstreams 2 carry this network

Downstreams 12 this network carries

Adjacent (IPv4) 13

Adjacent (IPv6) 4

Upstream graph Who carries AS33588, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS33588 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS33588: 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.

AS	Network	Type	Families	Paths seen
AS20115	Charter Communications LLC	Residential	IPv4 IPv6	2,742
AS7843	Charter Communications Inc	Residential	IPv4	116

Transit

Downstream networks

All 12

Networks for which AS33588 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS395251	Benefis Health System	Unclassified	IPv4	309
AS401920	Montana Outback Wireless Inc.	Unclassified	IPv4	186
AS393657	Colorado Mesa University	Unclassified	IPv4	182
AS394913	AirGrids	Unclassified	IPv4	118
AS19115	Charter Communications LLC	Unclassified	IPv4 IPv6	96
AS25816	Touro College	Unclassified	IPv4	62
AS62817	BARRETT HOSPITAL AND HEALHCARE	Unclassified	IPv4	61
AS393367	Teton County Hospital District	Unclassified	IPv4	49
AS26450	CTDI	Unclassified	IPv6	35
AS13590	Marcus Daly Memorial Hospital Corporation	Unclassified	IPv4	28

All 12 downstreams →

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS33588 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS20115	Charter Communications LLC	Residential	IPv4 IPv6	3,906
AS395251	Benefis Health System	Unclassified	IPv4	309
AS401920	Montana Outback Wireless Inc.	Unclassified	IPv4	186
AS393657	Colorado Mesa University	Unclassified	IPv4	182
AS394913	AirGrids	Unclassified	IPv4	118
AS7843	Charter Communications Inc	Residential	IPv4	116
AS19115	Charter Communications LLC	Unclassified	IPv4 IPv6	96
AS25816	Touro College	Unclassified	IPv4	62
AS62817	BARRETT HOSPITAL AND HEALHCARE	Unclassified	IPv4	61
AS393367	Teton County Hospital District	Unclassified	IPv4	49

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-19 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.