asn.dev

Observed topology

AS394437 PSLIGHTWAVE - PS Lightwave

Unclassified ARIN NSP

Upstreams 6 carry this network
Downstreams 42 this network carries
Adjacent (IPv4) 47
Adjacent (IPv6) 12
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 IPv61,279
AS174Cogent Communications, LLCTransitIPv4 IPv6849
AS6939Hurricane Electric LLCTransitIPv4 IPv6562
AS3257GTT Communications Inc.TransitIPv4500
AS2914NTT America, Inc.TransitIPv4 IPv6360
AS3356Level 3 Parent, LLCTransitIPv432

Transit

Downstream networks

All 42

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 CenterUnclassifiedIPv41,638
AS16970MIDnetUnclassifiedIPv4 IPv6961
AS32457City of HoustonUnclassifiedIPv4494
AS19927Lone Star College System DistrictUnclassifiedIPv4402
AS35847Ezee FiberResidentialIPv4 IPv6231
AS62467TXNet Communications LLCUnclassifiedIPv4 IPv6170
AS32208SKL Services IncUnclassifiedIPv4161
AS11124Friedkin Companies, Inc.UnclassifiedIPv4114
AS32626Houston Public LibraryUnclassifiedIPv4114
AS393535Fort Bend CountyUnclassifiedIPv4109

All 42 downstreams →

Adjacency

Adjacent networks

All 48

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

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv63,378
AS2914NTT America, Inc.TransitIPv4 IPv61,708
AS174Cogent Communications, LLCTransitIPv4 IPv61,707
AS26675Region IV Education Service CenterUnclassifiedIPv41,638
AS6939Hurricane Electric LLCTransitIPv4 IPv61,469
AS16970MIDnetUnclassifiedIPv4 IPv61,286
AS3257GTT Communications Inc.TransitIPv4 IPv61,208
AS3356Level 3 Parent, LLCTransitIPv4 IPv6998
AS62467TXNet Communications LLCUnclassifiedIPv4 IPv6543
AS32457City of HoustonUnclassifiedIPv4494

All 48 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.