asn.dev

Observed topology

AS25181 EU-SONY

Unclassified RIPE

Upstreams 7 carry this network
Downstreams 2 this network carries
Adjacent (IPv4) 5
Adjacent (IPv6) 8
Upstream graph Who carries AS25181, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS25181 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS25181: 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
AS6461Zayo BandwidthTransitIPv4 IPv6360
AS1257Tele2 Sverige ABMobileIPv4124
AS33353Sony Interactive Entertainment LLCHostingIPv4 IPv666
AS8220COLT Technology Services Group LimitedHostingIPv632
AS6696VERIXI SAUnclassifiedIPv630
AS13030Init7 (Switzerland) Ltd.HostingIPv621
AS64516unnamedUnclassifiedIPv61

Transit

Downstream networks

inferred

Networks for which AS25181 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS198538Sony Mobile Communications ABUnclassifiedIPv4 IPv6100
AS21139Sony Europe B.V.UnclassifiedIPv457

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS25181 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6461Zayo BandwidthTransitIPv4 IPv6360
AS33353Sony Interactive Entertainment LLCHostingIPv4 IPv6214
AS1257Tele2 Sverige ABMobileIPv4 IPv6133
AS198538Sony Mobile Communications ABUnclassifiedIPv4 IPv6100
AS21139Sony Europe B.V.UnclassifiedIPv457
AS8220COLT Technology Services Group LimitedHostingIPv632
AS6696VERIXI SAUnclassifiedIPv630
AS13030Init7 (Switzerland) Ltd.HostingIPv621
AS64516unnamedUnclassifiedIPv61

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-18 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.