asn.dev

Observed topology

AS2686 ATGS-MMD-AS - AT&T Enterprises, LLC

Unclassified ARIN NSP

Upstreams 43 carry this network
Downstreams 87 this network carries
Adjacent (IPv4) 128
Adjacent (IPv6) 31
Upstream graph Who carries AS2686, and who carries them, drawn as a map up to the transit-free core. 20 exchanges Where AS2686 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 43

Networks observed carrying traffic for AS2686: 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
AS6939Hurricane Electric LLCTransitIPv4 IPv61,593
AS1299Arelion Sweden ABTransitIPv4 IPv6891
AS174Cogent Communications, LLCTransitIPv4743
AS2914NTT America, Inc.TransitIPv4 IPv6715
AS7018AT&T Enterprises, LLCResidentialIPv4 IPv6451
AS3257GTT Communications Inc.TransitIPv4 IPv6431
AS9002RETN LimitedUnclassifiedIPv4 IPv6353
AS3356Level 3 Parent, LLCTransitIPv4 IPv6322
AS24482SG.GSHostingIPv4 IPv6148
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv6129

All 43 upstreams →

Transit

Downstream networks

All 87

Networks for which AS2686 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS4249Eli Lilly and CompanyUnclassifiedIPv41,797
AS3917Shell Information Technology International B.V.UnclassifiedIPv41,192
AS1341Rockwell Collins, Inc.UnclassifiedIPv4537
AS2687AT&T Enterprises, LLCUnclassifiedIPv4476
AS2154HP Inc.UnclassifiedIPv4358
AS11857Money Services, Inc.UnclassifiedIPv4288
AS40934Fortinet Inc.UnclassifiedIPv4245
AS2155HP Inc.UnclassifiedIPv4238
AS14381Caterpillar, Inc.UnclassifiedIPv4236
AS21272Danone SAUnclassifiedIPv4236

All 87 downstreams →

Adjacency

Adjacent networks

All 135

Every AS seen directly next to AS2686 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv62,982
AS1299Arelion Sweden ABTransitIPv4 IPv62,228
AS174Cogent Communications, LLCTransitIPv41,949
AS4249Eli Lilly and CompanyUnclassifiedIPv41,797
AS2914NTT America, Inc.TransitIPv4 IPv61,520
AS7018AT&T Enterprises, LLCResidentialIPv4 IPv61,423
AS3917Shell Information Technology International B.V.UnclassifiedIPv41,192
AS3257GTT Communications Inc.TransitIPv4 IPv61,088
AS3356Level 3 Parent, LLCTransitIPv4 IPv6803
AS9002RETN LimitedUnclassifiedIPv4 IPv6774

All 135 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.00M 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.