Upstream networks
AS21100 ITLDC-EU
Hosting RIPE
Transit
Upstream networks
Networks observed carrying traffic for AS21100: 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 |
|---|---|---|---|---|
| AS9002 | RETN Limited | Unclassified | IPv4 IPv6 | 821 |
| AS24961 | WIIT AG | Hosting | IPv4 | 351 |
| AS6461 | Zayo Bandwidth | Transit | IPv4 IPv6 | 326 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 240 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 190 |
| AS24785 | Broadband Hosting B.V. | Hosting | IPv4 IPv6 | 53 |
| AS20562 | Broadband Hosting B.V. | Hosting | IPv6 | 50 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 27 |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | Unclassified | IPv4 IPv6 | 24 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 IPv6 | 24 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 IPv6 | 24 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 24 |
| AS204092 | Association GRIFON | Unclassified | IPv4 IPv6 | 24 |
| AS34927 | iFog GmbH | Hosting | IPv4 | 22 |
| AS58057 | Securebit AG | Unclassified | IPv4 | 22 |
| AS202365 | Omer GOLGELI | Unclassified | IPv4 | 22 |
| AS6696 | VERIXI SA | Unclassified | IPv4 | 19 |
| AS20485 | Joint Stock Company TransTeleCom | Unclassified | IPv4 | 19 |
| AS4657 | StarHub Ltd | Residential | IPv4 | 18 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 18 |
| AS50673 | Serverius Holding B.V. | Unclassified | IPv4 | 18 |
| AS29632 | Netassist International EOOD | Unclassified | IPv6 | 10 |
| AS31500 | Global Network Management Inc | Unclassified | IPv4 | 3 |
| AS34019 | Hivane Association | Unclassified | IPv4 | 3 |
| AS12637 | SEEWEB s.r.l. | 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 2026-10-15 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.09M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.