Observed topology

AS33422 NETC - New England Telehealth Consortium

Unclassified ARIN

Upstreams 3 carry this network

Downstreams 9 this network carries

Adjacent (IPv4) 11

Adjacent (IPv6) 0

Upstream graph Who carries AS33422, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS33422 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS33422: 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
AS13536	FirstLight Fiber, Inc.	Residential	IPv4	757
AS13977	Fidium	Residential	IPv4	16
AS174	Cogent Communications, LLC	Transit	IPv4	1

Transit

Downstream networks

inferred

Networks for which AS33422 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS40626	Wentworth-Douglass Hospital	Unclassified	IPv4	65
AS47059	York Hospital	Unclassified	IPv4	65
AS53742	Houlton Regional Hospital	Unclassified	IPv4	65
AS54093	Eastern Maine Healthcare Systems	Unclassified	IPv4	65
AS54181	ST JOSEPH HOSPITAL	Unclassified	IPv4	58
AS25750	Southwestern Vermont Health Care Corporation	Unclassified	IPv4	38
AS11350	NorthWestern Medical Center	Unclassified	IPv4	35
AS13977	Fidium	Residential	IPv4	31
AS54471	Androscoggin Valley Hospital	Unclassified	IPv4	1

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS33422 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS13536	FirstLight Fiber, Inc.	Residential	IPv4	1,117
AS13977	Fidium	Residential	IPv4	112
AS40626	Wentworth-Douglass Hospital	Unclassified	IPv4	65
AS47059	York Hospital	Unclassified	IPv4	65
AS53742	Houlton Regional Hospital	Unclassified	IPv4	65
AS54093	Eastern Maine Healthcare Systems	Unclassified	IPv4	65
AS54181	ST JOSEPH HOSPITAL	Unclassified	IPv4	58
AS25750	Southwestern Vermont Health Care Corporation	Unclassified	IPv4	38
AS11350	NorthWestern Medical Center	Unclassified	IPv4	35
AS174	Cogent Communications, LLC	Transit	IPv4	1

All 11 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M 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.