asn.dev

Observed topology

AS63351 ASN-SCF-45 - Southern Caribbean Fiber

Unclassified ARIN

Upstreams 2 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 8
Adjacent (IPv6) 4
Upstream graph Who carries AS63351, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS63351 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS63351: 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
AS174Cogent Communications, LLCTransitIPv4 IPv6397
AS3257GTT Communications Inc.TransitIPv4 IPv699

Transit

Downstream networks

inferred

Networks for which AS63351 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS19246Antigua Computer Technology Co. Ltd.HostingIPv4849
AS262181Coral Telecom N.V.UnclassifiedIPv4496
AS11947Cablenett LimitedUnclassifiedIPv4 IPv6438
AS36290The Cable of St. KittsUnclassifiedIPv4344
AS394873DOMSPOTUnclassifiedIPv457
AS398821Government of MontserratUnclassifiedIPv457
AS33392Dauphin TelecomResidentialIPv64

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS63351 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv62,185
AS19246Antigua Computer Technology Co. Ltd.HostingIPv4849
AS3257GTT Communications Inc.TransitIPv4 IPv6669
AS262181Coral Telecom N.V.UnclassifiedIPv4496
AS36290The Cable of St. KittsUnclassifiedIPv4457
AS11947Cablenett LimitedUnclassifiedIPv4 IPv6438
AS394873DOMSPOTUnclassifiedIPv457
AS398821Government of MontserratUnclassifiedIPv457
AS33392Dauphin TelecomResidentialIPv64

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-07 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 72.97M 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.