asn.dev

Observed topology

AS19740 SUDJAM

Unclassified ARIN NSP

Upstreams 6 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 9
Adjacent (IPv6) 6
Upstream graph Who carries AS19740, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS19740 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS19740: 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 IPv62,930
AS174Cogent Communications, LLCTransitIPv4 IPv62,877
AS3257GTT Communications Inc.TransitIPv4 IPv6165
AS14907Wikimedia Foundation Inc.HostingIPv4 IPv675
AS971PureVoltage Hosting Inc.UnclassifiedIPv474
AS25091IP-Max SAUnclassifiedIPv61

Transit

Downstream networks

inferred

Networks for which AS19740 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS47007Colocation America CorporationUnclassifiedIPv4 IPv626,736
AS36782Keyway Network SystemsUnclassifiedIPv4858
AS329278Truehost Cloud LimitedUnclassifiedIPv4152
AS64282LINKSECURED LLCUnclassifiedIPv466

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS19740 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS47007Colocation America CorporationUnclassifiedIPv4 IPv626,736
AS6939Hurricane Electric LLCTransitIPv4 IPv623,474
AS174Cogent Communications, LLCTransitIPv4 IPv610,135
AS36782Keyway Network SystemsUnclassifiedIPv4858
AS3257GTT Communications Inc.TransitIPv4 IPv6165
AS329278Truehost Cloud LimitedUnclassifiedIPv4152
AS14907Wikimedia Foundation Inc.HostingIPv4 IPv680
AS971PureVoltage Hosting Inc.UnclassifiedIPv479
AS64282LINKSECURED LLCUnclassifiedIPv466
AS25091IP-Max SAUnclassifiedIPv61

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-29 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.36M 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.