Upstream networks
AS51800 FIBERNET-ASN FIBER Network s.r.o.
Unclassified RIPE
Transit
Upstream networks
Networks observed carrying traffic for AS51800: 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 |
|---|---|---|---|---|
| AS49025 | PRO-ZETA a.s. | Unclassified | IPv4 IPv6 | 61 |
| AS51400 | SPOJE.NET s.r.o. | Unclassified | IPv6 | 15 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 | 11 |
| AS8218 | Zayo Infrastructure France SA | Unclassified | IPv4 IPv6 | 2 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 2 |
| AS29504 | Freenet Liberec, z.s. | Unclassified | IPv4 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 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.