Observed topology

AS2544 METRO-AS

Unclassified ARIN

Upstreams 9 carry this network

Downstreams 7 this network carries

Adjacent (IPv4) 20

Adjacent (IPv6) 0

Upstream graph Who carries AS2544, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS2544 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS2544: 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
AS174	Cogent Communications, LLC	Transit	IPv4	836
AS6939	Hurricane Electric LLC	Transit	IPv4	181
AS14361	HopOne Internet Corporation	Hosting	IPv4	110
AS9002	RETN Limited	Unclassified	IPv4	44
AS3130	RGnet OU	Unclassified	IPv4	22
AS7575	Australian Academic and Research Network (AARNet)	Education	IPv4	22
AS24482	SG.GS	Hosting	IPv4	22
AS34927	iFog GmbH	Hosting	IPv4	22
AS394256	Tech Futures Interactive Inc.	Unclassified	IPv4	22

Transit

Downstream networks

inferred

Networks for which AS2544 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS33348	Pierce County	Unclassified	IPv4	319
AS32148	King County Library System	Unclassified	IPv4	177
AS30198	Kent School District	Unclassified	IPv4	164
AS399987	Tacoma-Pierce County Health Department	Unclassified	IPv4	116
AS63432	Puget Sound Regional Fire Authority	Unclassified	IPv4	58
AS396890	City of Redmond Washington	Unclassified	IPv4	58
AS19014	NORCOM	Unclassified	IPv4	8

Adjacency

Adjacent networks

All 20

Every AS seen directly next to AS2544 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS174	Cogent Communications, LLC	Transit	IPv4	1,387
AS33348	Pierce County	Unclassified	IPv4	319
AS6939	Hurricane Electric LLC	Transit	IPv4	305
AS14361	HopOne Internet Corporation	Hosting	IPv4	203
AS32148	King County Library System	Unclassified	IPv4	177
AS30198	Kent School District	Unclassified	IPv4	165
AS399987	Tacoma-Pierce County Health Department	Unclassified	IPv4	116
AS9002	RETN Limited	Unclassified	IPv4	79
AS63432	Puget Sound Regional Fire Authority	Unclassified	IPv4	58
AS396890	City of Redmond Washington	Unclassified	IPv4	58

All 20 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.25M 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.