Upstream networks
AS39521 TNGNET
Unclassified RIPE
Transit
Upstream networks
Networks observed carrying traffic for AS39521: 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 |
|---|---|---|---|---|
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 1,321 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 484 |
| AS5511 | Orange S.A. | Transit | IPv4 | 211 |
| AS6830 | Liberty Global Europe Holding B.V. | Residential | IPv4 | 197 |
| AS61138 | Zappie Host LLC | Unclassified | IPv4 IPv6 | 95 |
| AS50673 | Serverius Holding B.V. | Unclassified | IPv4 | 76 |
| AS6206 | Netrouting B.V. | Hosting | IPv4 | 59 |
| AS50304 | Blix Solutions AS | Unclassified | IPv4 IPv6 | 44 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 41 |
| AS20766 | Association "Gitoyen" | Unclassified | IPv4 | 38 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 | 38 |
| AS49673 | Truenetwork LLC | Unclassified | IPv4 | 38 |
| AS208972 | GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI | Unclassified | IPv4 | 38 |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | Unclassified | IPv4 IPv6 | 34 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 34 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 IPv6 | 34 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 IPv6 | 34 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 31 |
| AS29632 | Netassist International EOOD | Unclassified | IPv6 | 5 |
| AS25091 | IP-Max SA | Unclassified | IPv6 | 3 |
| AS213241 | TECHIT.BE SRL | Residential | IPv6 | 3 |
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 2026-10-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.25M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.