Upstream networks
AS21928 T-MOBILE-AS21928
Mobile ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS21928: 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 |
|---|---|---|---|---|
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 4,968 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 4,811 |
| AS6461 | Zayo Bandwidth | Transit | IPv4 IPv6 | 3,217 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 1,235 |
| AS4637 | Telstra Global | Unclassified | IPv4 | 483 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 285 |
| AS20205 | Amplex Electric, Inc. | Residential | IPv4 | 215 |
| AS9002 | RETN Limited | Unclassified | IPv4 IPv6 | 136 |
| AS7922 | Comcast Cable Communications, LLC | Residential | IPv4 | 123 |
| AS394256 | Tech Futures Interactive Inc. | Unclassified | IPv4 IPv6 | 59 |
| AS34927 | iFog GmbH | Hosting | IPv4 IPv6 | 40 |
| AS35280 | F5 Networks SARL | Hosting | IPv4 IPv6 | 34 |
| AS7575 | Australian Academic and Research Network (AARNet) | Education | IPv4 | 18 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 | 12 |
| AS6424 | EDGOO NETWORKS UNIPESSOAL LDA | Hosting | IPv4 | 7 |
| AS293 | ESnet | Unclassified | IPv4 | 6 |
| AS3130 | RGnet OU | Unclassified | IPv4 | 6 |
| AS4230 | CLARO S.A. | Residential | IPv4 | 5 |
| AS52025 | ParadoxNetworks Limited | 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 2026-10-12 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.21M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.