Upstream networks
AS21369 SEMA-UK-AS
Unclassified RIPE
Transit
Upstream networks
Networks observed carrying traffic for AS21369: 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 |
|---|---|---|---|---|
| AS198949 | Radware Ltd | Unclassified | IPv4 | 1,711 |
| AS8220 | COLT Technology Services Group Limited | Hosting | IPv4 | 528 |
| AS2856 | British Telecommunications Limited | Residential | IPv4 | 387 |
| AS702 | Verizon Business | Unclassified | IPv4 | 72 |
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 2026-10-18 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.