asn.dev

Observed topology

AS19523 BH-TELECOM-CORP

Hosting ARIN Network Services

Upstreams 8 carry this network
Downstreams 16 this network carries
Adjacent (IPv4) 25
Adjacent (IPv6) 11
Upstream graph Who carries AS19523, and who carries them, drawn as a map up to the transit-free core. 8 exchanges Where AS19523 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS19523: 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 IPv61,915
AS174Cogent Communications, LLCTransitIPv4 IPv6437
AS22652Videotron LteeResidentialIPv4 IPv677
AS24482SG.GSHostingIPv4 IPv642
AS394256Tech Futures Interactive Inc.UnclassifiedIPv4 IPv642
AS3130RGnet OUUnclassifiedIPv435
AS1403EBOXResidentialIPv614
AS20473The Constant Company, LLCHostingIPv67

Transit

Downstream networks

All 16

Networks for which AS19523 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS54980FlexNetworksResidentialIPv4 IPv6564
AS55017VDC Virtual Data Corp.UnclassifiedIPv4332
AS394352FlexNetworksUnclassifiedIPv4 IPv6281
AS393598Affinity Credit Union 2013UnclassifiedIPv4190
AS30324SaskEnergy Inc.UnclassifiedIPv4142
AS17300ISM CanadaUnclassifiedIPv4130
AS46612Bunge Canada Inc.UnclassifiedIPv4116
AS22686University of WinnipegUnclassifiedIPv493
AS1043KSP TechnologyUnclassifiedIPv485
AS63293Facebook, Inc.HostingIPv4 IPv681

All 16 downstreams →

Adjacency

Adjacent networks

All 27

Every AS seen directly next to AS19523 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv63,650
AS174Cogent Communications, LLCTransitIPv4 IPv6995
AS54980FlexNetworksResidentialIPv4 IPv6564
AS55017VDC Virtual Data Corp.UnclassifiedIPv4332
AS394352FlexNetworksUnclassifiedIPv4 IPv6281
AS393598Affinity Credit Union 2013UnclassifiedIPv4190
AS30324SaskEnergy Inc.UnclassifiedIPv4142
AS22652Videotron LteeResidentialIPv4 IPv6133
AS17300ISM CanadaUnclassifiedIPv4130
AS803Saskatchewan TelecommunicationsResidentialIPv4122

All 27 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.