Upstream networks
AS23520 LIBERTY-NETWORKS - Columbus Networks USA, Inc.
Residential ARIN NSP
Transit
Upstream networks
Networks observed carrying traffic for AS23520: 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 |
|---|---|---|---|---|
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 2,384 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 1,872 |
| AS6830 | Liberty Global Europe Holding B.V. | Residential | IPv4 IPv6 | 925 |
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. | Transit | IPv4 IPv6 | 719 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 IPv6 | 279 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 | 120 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 | 54 |
| AS7195 | EDGEUNO S.A.S | Unclassified | IPv6 | 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 2026-11-12 18:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.25M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.