Upstream networks
AS21804 ACCESS-SK
Unclassified ARIN Cable/DSL/ISP
Transit
Upstream networks
Networks observed carrying traffic for AS21804: 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 |
|---|---|---|---|---|
| AS3257 | GTT Communications Inc. | Transit | IPv4 IPv6 | 619 |
| AS6327 | Shaw Communications | Residential | IPv4 IPv6 | 230 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 214 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 | 144 |
| AS9002 | RETN Limited | Unclassified | IPv4 IPv6 | 74 |
| AS22652 | Videotron Ltee | Residential | IPv4 IPv6 | 50 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 26 |
| AS394256 | Tech Futures Interactive Inc. | Unclassified | IPv4 IPv6 | 26 |
| AS3130 | RGnet OU | Unclassified | IPv4 | 25 |
| AS293 | ESnet | Unclassified | IPv4 | 24 |
| AS7575 | Australian Academic and Research Network (AARNet) | Education | IPv4 | 24 |
| AS34927 | iFog GmbH | Hosting | IPv4 | 24 |
| AS1403 | EBOX | Residential | IPv6 | 4 |
| AS852 | TELUS Communications Inc. | Residential | IPv6 | 2 |
| AS20473 | The Constant Company, LLC | Hosting | IPv6 | 2 |
| AS35280 | F5 Networks SARL | Hosting | IPv6 | 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.