asn.dev

Observed topology

AS5403 AS5403 APA-IT Informations Technologie G.m.b.H

Hosting RIPE

Upstreams 7 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 10
Adjacent (IPv6) 8
Upstream graph Who carries AS5403, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS5403 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS5403: 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
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbHUnclassifiedIPv4 IPv62,811
AS3356Level 3 Parent, LLCTransitIPv4 IPv6227
AS6939Hurricane Electric LLCTransitIPv4105
AS3303Swisscom (Schweiz) AGResidentialIPv426
AS33891Core-Backbone GmbHHostingIPv413
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv65
AS9002RETN LimitedUnclassifiedIPv61

Transit

Downstream networks

inferred

Networks for which AS5403 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS199216Compass-Verlag GmbHUnclassifiedIPv4 IPv6538
AS31903-S-IT Dienstleistungen GmbHUnclassifiedIPv4 IPv6151
AS208740Bundesministerium fuer europaeische und internationale AngelegenheitenUnclassifiedIPv4 IPv699
AS34183Bundesministerium f. GesundheitUnclassifiedIPv4 IPv689

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS5403 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbHUnclassifiedIPv4 IPv63,549
AS199216Compass-Verlag GmbHUnclassifiedIPv4 IPv6538
AS3356Level 3 Parent, LLCTransitIPv4 IPv6338
AS31903-S-IT Dienstleistungen GmbHUnclassifiedIPv4 IPv6151
AS6939Hurricane Electric LLCTransitIPv4121
AS208740Bundesministerium fuer europaeische und internationale AngelegenheitenUnclassifiedIPv4 IPv699
AS34183Bundesministerium f. GesundheitUnclassifiedIPv4 IPv689
AS3303Swisscom (Schweiz) AGResidentialIPv432
AS33891Core-Backbone GmbHHostingIPv415
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv67

All 11 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M 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.