Upstream networks
AS57521 SIMPLYSOFT-AS
Unclassified RIPE
Transit
Upstream networks
Networks observed carrying traffic for AS57521: 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 |
|---|---|---|---|---|
| AS13030 | Init7 (Switzerland) Ltd. | Hosting | IPv4 IPv6 | 141 |
| AS34927 | iFog GmbH | Hosting | IPv4 IPv6 | 134 |
| AS58057 | Securebit AG | Unclassified | IPv4 IPv6 | 59 |
| AS20473 | The Constant Company, LLC | Hosting | IPv4 IPv6 | 41 |
| AS35708 | 4b42 UG | Unclassified | IPv4 IPv6 | 7 |
| AS56755 | Securebit AG | Unclassified | IPv4 IPv6 | 7 |
| AS205794 | JINZE YANG | Unclassified | IPv6 | 6 |
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 2026-10-15 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.09M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.