Upstream networks
AS21013 ITANDTEL-AS Wels
Unclassified ARIN NSP
Transit
Upstream networks
Networks observed carrying traffic for AS21013: 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 | 120 |
| AS33891 | Core-Backbone GmbH | Hosting | IPv4 IPv6 | 102 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 83 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 53 |
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 50 |
| AS34549 | meerfarbig GmbH & Co. KG | Hosting | IPv4 IPv6 | 47 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 | 44 |
| AS6461 | Zayo Bandwidth | Transit | IPv4 | 44 |
| AS12605 | LIWEST Kabelmedien GmbH | Residential | IPv4 | 32 |
| AS1764 | Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH | Unclassified | IPv4 | 22 |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | Unclassified | IPv4 IPv6 | 14 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 14 |
| AS29504 | Freenet Liberec, z.s. | Unclassified | IPv4 IPv6 | 14 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 14 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 IPv6 | 14 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 IPv6 | 14 |
| AS212024 | Marc Schmitt | Unclassified | IPv4 IPv6 | 14 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 | 11 |
| AS12552 | GlobalConnect AB | Unclassified | IPv4 | 11 |
| AS20485 | Joint Stock Company TransTeleCom | Unclassified | IPv4 | 11 |
| AS20766 | Association "Gitoyen" | Unclassified | IPv4 | 11 |
| AS34927 | iFog GmbH | Hosting | IPv4 | 11 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 11 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 | 11 |
| AS29632 | Netassist International EOOD | Unclassified | IPv6 | 6 |
| AS12779 | IT.Gate S.p.A. | Unclassified | IPv4 | 3 |
| AS50673 | Serverius Holding B.V. | Unclassified | IPv4 | 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 2026-10-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.22M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.