Upstream networks
AS21534 AS21534 - BroadSoft, Inc.
Unclassified APNIC
Transit
Upstream networks
Networks observed carrying traffic for AS21534: 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 IPv6 | 658 |
| AS15830 | Equinix (EMEA) Acquisition Enterprises B.V. | Hosting | IPv4 IPv6 | 419 |
| AS2516 | KDDI CORPORATION | Mobile | IPv4 IPv6 | 314 |
| AS6461 | Zayo Bandwidth | Transit | IPv4 IPv6 | 226 |
| AS7474 | SingTel Optus Pty Ltd | Unclassified | IPv6 | 50 |
| AS13445 | Cisco Webex LLC | Hosting | IPv4 | 38 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 IPv6 | 28 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 | 16 |
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 4 |
| AS24482 | SG.GS | Hosting | IPv4 | 2 |
| AS64073 | Vetta Group | Unclassified | IPv4 | 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 2026-10-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.22M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.