Upstream networks
AS8501 PIONIER-AS PIONIER, National Research and Education Network in Poland
Education ARIN Educational/Research
Transit
Upstream networks
Networks observed carrying traffic for AS8501: 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 |
|---|---|---|---|---|
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 194 |
| AS2603 | NORDUnet | Education | IPv4 IPv6 | 154 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 83 |
| AS20965 | GEANT Vereniging | Unclassified | IPv4 | 28 |
| AS21320 | GEANT Vereniging | Unclassified | IPv4 IPv6 | 17 |
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 2026-10-29 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.36M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.