asn.dev

Observed topology

AS1968 UMASSNET-AS1968 - UMASSNET

Unclassified ARIN

Upstreams 4 carry this network
Downstreams 9 this network carries
Adjacent (IPv4) 13
Adjacent (IPv6) 6
Upstream graph Who carries AS1968, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS1968 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS1968: 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
AS174Cogent Communications, LLCTransitIPv4 IPv6924
AS3257GTT Communications Inc.TransitIPv4 IPv6338
AS11537Internet2UnclassifiedIPv4 IPv6139
AS11164Internet2EducationIPv4 IPv692

Transit

Downstream networks

inferred

Networks for which AS1968 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS1255Smith CollegeUnclassifiedIPv4868
AS8067Westfield State UniversityEducationIPv4372
AS1249University of Massachusetts - AMHERSTUnclassifiedIPv4248
AS1929University of Massachusetts - AMHERSTUnclassifiedIPv4 IPv6218
AS396086Hampshire CollegeUnclassifiedIPv4124
AS32559Amherst CollegeUnclassifiedIPv462
AS46905University of Massachusetts - LowellUnclassifiedIPv462
AS394003University of Massachusetts DartmouthUnclassifiedIPv462
AS396128Mount Holyoke CollegeUnclassifiedIPv462

Adjacency

Adjacent networks

All 13

Every AS seen directly next to AS1968 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv62,221
AS1255Smith CollegeUnclassifiedIPv4868
AS3257GTT Communications Inc.TransitIPv4 IPv6809
AS8067Westfield State UniversityEducationIPv4372
AS11537Internet2UnclassifiedIPv4 IPv6322
AS1249University of Massachusetts - AMHERSTUnclassifiedIPv4 IPv6281
AS11164Internet2EducationIPv4 IPv6252
AS1929University of Massachusetts - AMHERSTUnclassifiedIPv4 IPv6218
AS396086Hampshire CollegeUnclassifiedIPv4124
AS32559Amherst CollegeUnclassifiedIPv462

All 13 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-01 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.48M 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.