Upstream networks
AS21301 RBS-FM-AS
Unclassified APNIC
Transit
Upstream networks
Networks observed carrying traffic for AS21301: 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 |
|---|---|---|---|---|
| AS32787 | Akamai Technologies, Inc. | Hosting | IPv4 | 551 |
| AS1273 | IDDQD-AS | Business | IPv4 | 118 |
| AS2856 | British Telecommunications Limited | Residential | IPv4 | 61 |
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 2026-10-30 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.49M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.