asn.dev

Observed topology

AS16905 LEARN

Unclassified ARIN

Upstreams 2 carry this network
Downstreams 28 this network carries
Adjacent (IPv4) 31
Adjacent (IPv6) 5
Upstream graph Who carries AS16905, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS16905 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS16905: 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
AS11537Internet2UnclassifiedIPv4 IPv624
AS293ESnetUnclassifiedIPv44

Transit

Downstream networks

All 28

Networks for which AS16905 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS30674Baylor UniversityUnclassifiedIPv4 IPv661
AS36695Region 5 Education Service CenterUnclassifiedIPv436
AS18777Texas State UniversityUnclassifiedIPv430
AS14382Education Service CenterUnclassifiedIPv4 IPv625
AS589University of North TexasUnclassifiedIPv424
AS36658Angelo State UniversityUnclassifiedIPv421
AS10421Texas Tech UniversityEducationIPv420
AS1832Southern Methodist UniversityUnclassifiedIPv418
AS46476Texas Tech University Health Sciences CenterUnclassifiedIPv418
AS40661Education Service Center, Region VIUnclassifiedIPv414

All 28 downstreams →

Adjacency

Adjacent networks

All 31

Every AS seen directly next to AS16905 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS11537Internet2UnclassifiedIPv4 IPv6983
AS4557Rice UniversityEducationIPv4 IPv6459
AS293ESnetUnclassifiedIPv4212
AS276University of Texas SystemUnclassifiedIPv4175
AS14085LEARNUnclassifiedIPv4 IPv6150
AS30674Baylor UniversityUnclassifiedIPv4 IPv661
AS36695Region 5 Education Service CenterUnclassifiedIPv436
AS18777Texas State UniversityUnclassifiedIPv430
AS14382Education Service CenterUnclassifiedIPv4 IPv625
AS589University of North TexasUnclassifiedIPv424

All 31 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-09 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.03M 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.