asn.dev

Observed topology

AS19255 YOUR-ORG-INC-NA

Hosting ARIN Content

Upstreams 14 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 17
Adjacent (IPv6) 6
Upstream graph Who carries AS19255, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS19255 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 14

Networks observed carrying traffic for AS19255: 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
AS23352DEFT.COMHostingIPv4 IPv61,002
AS3257GTT Communications Inc.TransitIPv4 IPv6162
AS6939Hurricane Electric LLCTransitIPv4 IPv6104
AS174Cogent Communications, LLCTransitIPv4 IPv689
AS7922Comcast Cable Communications, LLCResidentialIPv4 IPv687
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv657
AS24482SG.GSHostingIPv48
AS56655Gigahost ASUnclassifiedIPv48
AS33891Core-Backbone GmbHHostingIPv42
AS37721Virtual Technologies & SolutionsResidentialIPv42

All 14 upstreams →

Transit

Downstream networks

inferred

Networks for which AS19255 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS18905YOUR.ORG, INC.UnclassifiedIPv458
AS26943YOUR.ORG, INC.UnclassifiedIPv440
AS13331MetaPeerHostingIPv420

Adjacency

Adjacent networks

All 17

Every AS seen directly next to AS19255 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS23352DEFT.COMHostingIPv4 IPv61,023
AS3257GTT Communications Inc.TransitIPv4 IPv6195
AS6939Hurricane Electric LLCTransitIPv4 IPv6139
AS174Cogent Communications, LLCTransitIPv4 IPv6108
AS7922Comcast Cable Communications, LLCResidentialIPv4 IPv693
AS18905YOUR.ORG, INC.UnclassifiedIPv458
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv657
AS26943YOUR.ORG, INC.UnclassifiedIPv440
AS13331MetaPeerHostingIPv420
AS24482SG.GSHostingIPv412

All 17 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-20 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.16M 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.