Upstream networks
AS40401 BACKBLAZE
Hosting APNIC
Transit
Upstream networks
Networks observed carrying traffic for AS40401: 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 |
|---|---|---|---|---|
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 1,299 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 IPv6 | 601 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 518 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 306 |
| AS812 | Rogers Communications Canada Inc. | Mobile | IPv4 IPv6 | 144 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 78 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 IPv6 | 28 |
| AS293 | ESnet | Unclassified | IPv4 | 23 |
| AS4637 | Telstra Global | Unclassified | IPv4 | 20 |
| AS1403 | EBOX | Residential | IPv6 | 18 |
| AS50673 | Serverius Holding B.V. | Unclassified | IPv4 IPv6 | 15 |
| AS42708 | Glesys AB | Unclassified | IPv4 IPv6 | 13 |
| AS22652 | Videotron Ltee | Residential | IPv4 IPv6 | 11 |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | Unclassified | IPv4 IPv6 | 10 |
| AS29632 | Netassist International EOOD | Unclassified | IPv6 | 10 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 10 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 IPv6 | 10 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 IPv6 | 10 |
| AS394256 | Tech Futures Interactive Inc. | Unclassified | IPv4 IPv6 | 10 |
| AS2152 | CENIC | Unclassified | IPv4 | 9 |
| AS11164 | Internet2 | Education | IPv4 | 9 |
| AS20473 | The Constant Company, LLC | Hosting | IPv6 | 9 |
| AS213241 | TECHIT.BE SRL | Residential | IPv6 | 8 |
| AS3216 | PJSC "Vimpelcom" | Mobile | IPv4 | 5 |
| AS4657 | StarHub Ltd | Residential | IPv4 | 5 |
| AS9002 | RETN Limited | Unclassified | IPv6 | 5 |
| AS12552 | GlobalConnect AB | Unclassified | IPv4 | 5 |
| AS12779 | IT.Gate S.p.A. | Unclassified | IPv4 | 5 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv6 | 5 |
| AS20766 | Association "Gitoyen" | Unclassified | IPv4 | 5 |
| AS25091 | IP-Max SA | Unclassified | IPv6 | 5 |
| AS34019 | Hivane Association | Unclassified | IPv6 | 5 |
| AS34927 | iFog GmbH | Hosting | IPv4 | 5 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 5 |
| AS1103 | SURF B.V. | Unclassified | IPv6 | 3 |
| AS29169 | GANDI SAS | Hosting | IPv6 | 3 |
| AS15412 | Flag Telecom UK Limited | Unclassified | IPv4 | 1 |
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 2026-10-19 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.