Observed topology

AS276 OTS-AS-276

Unclassified APNIC

Upstreams 2 carry this network

Downstreams 10 this network carries

Adjacent (IPv4) 12

Adjacent (IPv6) 3

Upstream graph Who carries AS276, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS276 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS276: 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
AS14085	LEARN	Unclassified	IPv4	6
AS16905	LEARN	Unclassified	IPv4	1

Transit

Downstream networks

inferred

Networks for which AS276 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS11481	University of Texas Rio Grande Valley	Education	IPv4	75
AS13998	University of Texas Southwestern Medical Center	Unclassified	IPv4	65
AS1970	Texas A&M University	Unclassified	IPv4 IPv6	36
AS18	University of Texas at Austin	Unclassified	IPv4	35
AS32093	University of Texas at Austin	Unclassified	IPv4	21
AS3794	Texas A&M University	Education	IPv4 IPv6	11
AS16461	The University of Texas at El Paso	Unclassified	IPv4	5
AS19856	Brazosport College	Unclassified	IPv4	5
AS26971	-Reserved AS-	Unclassified	IPv4	5
AS27594	University of Texas at San Antonio	Unclassified	IPv4	5

Adjacency

Adjacent networks

All 12

Every AS seen directly next to AS276 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS16905	LEARN	Unclassified	IPv4	175
AS14085	LEARN	Unclassified	IPv4 IPv6	150
AS11481	University of Texas Rio Grande Valley	Education	IPv4	90
AS1970	Texas A&M University	Unclassified	IPv4 IPv6	76
AS13998	University of Texas Southwestern Medical Center	Unclassified	IPv4	65
AS18	University of Texas at Austin	Unclassified	IPv4	35
AS32093	University of Texas at Austin	Unclassified	IPv4	21
AS3794	Texas A&M University	Education	IPv4 IPv6	11
AS16461	The University of Texas at El Paso	Unclassified	IPv4	5
AS19856	Brazosport College	Unclassified	IPv4	5

All 12 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-22 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.12M 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.