asn.dev

Observed topology

AS12605 LIWEST-AT Linz, Austria

Residential RIPE Cable/DSL/ISP

Upstreams 19 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 18
Adjacent (IPv6) 10
Upstream graph Who carries AS12605, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS12605 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 19

Networks observed carrying traffic for AS12605: 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
AS8218Zayo Infrastructure France SAUnclassifiedIPv4 IPv6135
AS3356Level 3 Parent, LLCTransitIPv4 IPv6105
AS1299Arelion Sweden ABTransitIPv4 IPv6100
AS6939Hurricane Electric LLCTransitIPv4 IPv685
AS21013eww agUnclassifiedIPv430
AS34549meerfarbig GmbH & Co. KGHostingIPv427
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv610
AS24482SG.GSHostingIPv4 IPv610
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv610
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv610

All 19 upstreams →

Transit

Downstream networks

inferred

Networks for which AS12605 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS21013eww agUnclassifiedIPv432

Adjacency

Adjacent networks

All 19

Every AS seen directly next to AS12605 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS8218Zayo Infrastructure France SAUnclassifiedIPv4 IPv6269
AS21013eww agUnclassifiedIPv4164
AS3356Level 3 Parent, LLCTransitIPv4 IPv6105
AS1299Arelion Sweden ABTransitIPv4 IPv6100
AS6939Hurricane Electric LLCTransitIPv4 IPv685
AS34549meerfarbig GmbH & Co. KGHostingIPv427
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv610
AS24482SG.GSHostingIPv4 IPv610
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv610
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv610

All 19 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-24 16:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.19M 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.