Upstream networks
AS201637 BARTNET-AS
Unclassified RIPE
Transit
Upstream networks
Networks observed carrying traffic for AS201637: 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 | 87 |
| AS203620 | Polnocny Klaster ICT SP. z.o.o. | Unclassified | IPv4 | 51 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 | 33 |
| AS5617 | Orange Polska Spolka Akcyjna | Mobile | IPv4 | 6 |
| AS24482 | SG.GS | Hosting | IPv4 | 3 |
| AS33891 | Core-Backbone GmbH | Hosting | IPv4 | 3 |
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 2026-10-19 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.