asn.dev

Observed topology

AS25400 TELIA-NORWAY-AS Telia Norge AS

Unclassified RIPE NSP

Upstreams 6 carry this network
Downstreams 34 this network carries
Adjacent (IPv4) 41
Adjacent (IPv6) 19
Upstream graph Who carries AS25400, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS25400 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS25400: 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 IPv65,658
AS6939Hurricane Electric LLCTransitIPv4 IPv61,489
AS50304Blix Solutions ASUnclassifiedIPv4130
AS12552GlobalConnect ABUnclassifiedIPv4127
AS42708Glesys ABUnclassifiedIPv4126
AS2116GLOBALCONNECT ASResidentialIPv420

Transit

Downstream networks

All 34

Networks for which AS25400 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS49278IKT-KAPASITETERUnclassifiedIPv4 IPv6763
AS31264ADVANIA NORGE ASUnclassifiedIPv4 IPv6621
AS49082ZONES ASUnclassifiedIPv4 IPv6538
AS49455Telia Norge ASUnclassifiedIPv4236
AS208202Fiberverket ASUnclassifiedIPv4232
AS15765Tafjord Connect ASUnclassifiedIPv4 IPv6208
AS198309Telia Norge ASUnclassifiedIPv4 IPv6149
AS200139Statens VegvesenUnclassifiedIPv4 IPv6149
AS25225CGI Norge ASUnclassifiedIPv4 IPv6144
AS21171Schibsted Media ASHostingIPv4118

All 34 downstreams →

Adjacency

Adjacent networks

All 42

Every AS seen directly next to AS25400 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv68,545
AS6939Hurricane Electric LLCTransitIPv4 IPv62,660
AS49278IKT-KAPASITETERUnclassifiedIPv4 IPv6763
AS31264ADVANIA NORGE ASUnclassifiedIPv4 IPv6621
AS49082ZONES ASUnclassifiedIPv4 IPv6550
AS49455Telia Norge ASUnclassifiedIPv4236
AS15765Tafjord Connect ASUnclassifiedIPv4 IPv6234
AS208202Fiberverket ASUnclassifiedIPv4232
AS42708Glesys ABUnclassifiedIPv4209
AS50304Blix Solutions ASUnclassifiedIPv4208

All 42 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M 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.