Upstream networks
AS21509 APOLLONYC - Apollo Management, L.P.
Unclassified ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS21509: 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 | 293 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 | 124 |
| AS3910 | CenturyLink Communications, LLC | Unclassified | IPv4 | 119 |
| AS17762 | Tata Teleservices Maharashtra Ltd | Unclassified | IPv4 | 32 |
| AS9498 | BHARTI Airtel Ltd. | Mobile | IPv4 | 28 |
| AS5580 | GTT Communications Netherlands B.V. | Transit | IPv4 | 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.