asn.dev

Observed topology

AS394437 PSLIGHTWAVE - PS Lightwave

Unclassified ARIN

Upstreams 6 carry this network
Downstreams 41 this network carries
Adjacent (IPv4) 46
Adjacent (IPv6) 11
Upstream graph Who carries AS394437, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS394437 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS394437: 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
AS1299Arelion Sweden ABTransitIPv4 IPv61,324
AS174Cogent Communications, LLCTransitIPv4 IPv6804
AS3257GTT Communications Inc.TransitIPv4 IPv6563
AS6939Hurricane Electric LLCTransitIPv4 IPv6561
AS2914NTT America, Inc.TransitIPv4 IPv6360
AS3356Level 3 Parent, LLCTransitIPv432

Transit

Downstream networks

All 41

Networks for which AS394437 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS26675Region IV Education Service CenterUnclassifiedIPv41,687
AS16970MIDnetUnclassifiedIPv4 IPv6977
AS32457City of HoustonUnclassifiedIPv4507
AS19927Lone Star College System DistrictUnclassifiedIPv4409
AS62467TXNet Communications LLCUnclassifiedIPv4 IPv6179
AS32208SKL Services IncUnclassifiedIPv4161
AS11124Friedkin Companies, Inc.UnclassifiedIPv4116
AS32626Houston Public LibraryUnclassifiedIPv4116
AS393535Fort Bend CountyUnclassifiedIPv4111
AS11942IP Global, LLC.UnclassifiedIPv4105

All 41 downstreams →

Adjacency

Adjacent networks

All 47

Every AS seen directly next to AS394437 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv63,308
AS174Cogent Communications, LLCTransitIPv4 IPv61,691
AS26675Region IV Education Service CenterUnclassifiedIPv41,687
AS2914NTT America, Inc.TransitIPv4 IPv61,605
AS6939Hurricane Electric LLCTransitIPv4 IPv61,428
AS3257GTT Communications Inc.TransitIPv4 IPv61,402
AS16970MIDnetUnclassifiedIPv4 IPv61,307
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,001
AS62467TXNet Communications LLCUnclassifiedIPv4 IPv6575
AS32457City of HoustonUnclassifiedIPv4507

All 47 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.