asn.dev

Observed topology

AS25761 FIFTYFIVE-AS 55 IT Services GmbH

Unclassified RIPE NSP

Upstreams 6 carry this network
Downstreams 6 this network carries
Adjacent (IPv4) 10
Adjacent (IPv6) 12
Upstream graph Who carries AS25761, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS25761 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS25761: 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 IPv641
AS5405Inter.link GmbHUnclassifiedIPv4 IPv627
AS6939Hurricane Electric LLCTransitIPv4 IPv620
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv62
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv62
AS9002RETN LimitedUnclassifiedIPv61

Transit

Downstream networks

inferred

Networks for which AS25761 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS60274EDV Consulting Zoichter GmbHUnclassifiedIPv4 IPv6175
AS210626Lipicer KGUnclassifiedIPv4 IPv6152
AS219391Ub services FlexCo (Flexible Kapitalgesellschaft)UnclassifiedIPv4 IPv693
AS51658lucesem technology GmbHHostingIPv4 IPv673
AS21450255 IT Services GmbHUnclassifiedIPv633
AS211071baha GmbHUnclassifiedIPv41

Adjacency

Adjacent networks

All 13

Every AS seen directly next to AS25761 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv6403
AS60274EDV Consulting Zoichter GmbHUnclassifiedIPv4 IPv6175
AS210626Lipicer KGUnclassifiedIPv4 IPv6152
AS5405Inter.link GmbHUnclassifiedIPv4 IPv6126
AS51658lucesem technology GmbHHostingIPv4 IPv6111
AS6939Hurricane Electric LLCTransitIPv4 IPv698
AS219391Ub services FlexCo (Flexible Kapitalgesellschaft)UnclassifiedIPv4 IPv693
AS21450255 IT Services GmbHUnclassifiedIPv633
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv613
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv611

All 13 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-02 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.44M 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.