asn.dev

Observed topology

AS8437 UTA-AS Hutchison Drei Austria GmbH

Unclassified RIPE

Upstreams 2 carry this network
Downstreams 47 this network carries
Adjacent (IPv4) 47
Adjacent (IPv6) 8
Upstream graph Who carries AS8437, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS8437 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS8437: 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
AS25255Hutchison Drei Austria GmbHResidentialIPv4 IPv65,485
AS3320Deutsche Telekom AGMobileIPv4 IPv6402

Transit

Downstream networks

All 47

Networks for which AS8437 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS47477REWE International Dienstleistungs GmbHUnclassifiedIPv4177
AS197458Organization of the Petroleum Exporting CountriesUnclassifiedIPv4121
AS44825Oesterreichisches Rotes Kreuz, Landesverband OberoesterreichUnclassifiedIPv4117
AS199437Verband der Versicherungsunternehmen OesterreichsUnclassifiedIPv4116
AS202549Sattler AGUnclassifiedIPv4116
AS213102BKTV GmbHUnclassifiedIPv4114
AS212796SmartFiber GmbHUnclassifiedIPv4 IPv696
AS25126TIWAG-Tiroler Wasserkraft AGUnclassifiedIPv4 IPv681
AS21039Energie Steiermark AGUnclassifiedIPv471
AS42114PG Austria GmbHUnclassifiedIPv459

All 47 downstreams →

Adjacency

Adjacent networks

All 49

Every AS seen directly next to AS8437 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS25255Hutchison Drei Austria GmbHResidentialIPv4 IPv67,452
AS3320Deutsche Telekom AGMobileIPv4 IPv6402
AS47477REWE International Dienstleistungs GmbHUnclassifiedIPv4177
AS197458Organization of the Petroleum Exporting CountriesUnclassifiedIPv4121
AS44825Oesterreichisches Rotes Kreuz, Landesverband OberoesterreichUnclassifiedIPv4117
AS199437Verband der Versicherungsunternehmen OesterreichsUnclassifiedIPv4116
AS202549Sattler AGUnclassifiedIPv4116
AS213102BKTV GmbHUnclassifiedIPv4114
AS212796SmartFiber GmbHUnclassifiedIPv4 IPv696
AS25126TIWAG-Tiroler Wasserkraft AGUnclassifiedIPv4 IPv681

All 49 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.