asn.dev

Observed topology

AS31736 SENSELAN-AS senseLAN GmbH

Residential RIPE Cable/DSL/ISP

Upstreams 11 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 8
Upstream graph Who carries AS31736, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS31736 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 11

Networks observed carrying traffic for AS31736: 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
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6359
AS1299Arelion Sweden ABTransitIPv4 IPv6349
AS13030Init7 (Switzerland) Ltd.HostingIPv4 IPv6276
AS6939Hurricane Electric LLCTransitIPv4 IPv6214
AS174Cogent Communications, LLCTransitIPv4116
AS24482SG.GSHostingIPv4 IPv628
AS34019Hivane AssociationUnclassifiedIPv4 IPv628
AS33891Core-Backbone GmbHHostingIPv419
AS9002RETN LimitedUnclassifiedIPv618
AS1836green.ch AGResidentialIPv69

All 11 upstreams →

Transit

Downstream networks

inferred

Networks for which AS31736 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS42155Evard AGUnclassifiedIPv4118
AS48461stepping stone AGUnclassifiedIPv4108
AS203882Altern8 SAHostingIPv454

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS31736 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6461
AS1299Arelion Sweden ABTransitIPv4 IPv6401
AS13030Init7 (Switzerland) Ltd.HostingIPv4 IPv6312
AS6939Hurricane Electric LLCTransitIPv4 IPv6214
AS174Cogent Communications, LLCTransitIPv4206
AS42155Evard AGUnclassifiedIPv4118
AS48461stepping stone AGUnclassifiedIPv4108
AS203882Altern8 SAHostingIPv454
AS24482SG.GSHostingIPv4 IPv628
AS34019Hivane AssociationUnclassifiedIPv4 IPv628

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M 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.