Upstream networks
AS15373 CZESTMAN-AS Politechnika Czestochowska
Unclassified RIPE
Transit
Upstream networks
Networks observed carrying traffic for AS15373: 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 |
|---|---|---|---|---|
| AS8501 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | Education | IPv4 IPv6 | 329 |
| AS25084 | Politechnika Czestochowska | Unclassified | IPv4 IPv6 | 126 |
| AS5617 | Orange Polska Spolka Akcyjna | Mobile | IPv4 | 7 |
| AS196844 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | Unclassified | IPv6 | 1 |
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 2026-11-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.00M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.