Upstream networks
AS209531 OSTV SIX
Residential RIPE Cable/DSL/ISP
Transit
Upstream networks
Networks observed carrying traffic for AS209531: 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.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS39392 | SH.cz s.r.o. | Hosting | IPv4 IPv6 | 128 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 102 |
| AS31230 | Slovak University of Technology in Bratislava | Unclassified | IPv4 IPv6 | 14 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 IPv6 | 12 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 6 |
| AS29504 | Freenet Liberec, z.s. | Unclassified | IPv4 IPv6 | 6 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 IPv6 | 6 |
| AS20562 | Broadband Hosting B.V. | Hosting | IPv4 | 2 |
| AS33891 | Core-Backbone GmbH | Hosting | IPv4 | 2 |
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.
Derived from routing tables collected at 2026-10-15 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.09M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.