Upstream networks
AS21056 ASN-WELCOMEITALIA
Unclassified APNIC
Transit
Upstream networks
Networks observed carrying traffic for AS21056: 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 |
|---|---|---|---|---|
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. | Transit | IPv4 IPv6 | 622 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 308 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 275 |
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 272 |
| AS34549 | meerfarbig GmbH & Co. KG | Hosting | IPv4 | 123 |
| AS50304 | Blix Solutions AS | Unclassified | IPv4 | 82 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 42 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 IPv6 | 42 |
| AS50628 | Leonix Telecom SAS | Unclassified | IPv4 IPv6 | 42 |
| AS293 | ESnet | Unclassified | IPv4 | 41 |
| AS1836 | green.ch AG | Residential | IPv4 | 41 |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | Unclassified | IPv4 | 41 |
| AS3741 | Dimension Data | Unclassified | IPv4 | 41 |
| AS4657 | StarHub Ltd | Residential | IPv4 | 41 |
| AS12552 | GlobalConnect AB | Unclassified | IPv4 | 41 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 | 41 |
| AS20485 | Joint Stock Company TransTeleCom | Unclassified | IPv4 | 41 |
| AS20766 | Association "Gitoyen" | Unclassified | IPv4 | 41 |
| AS33891 | Core-Backbone GmbH | Hosting | IPv4 | 41 |
| AS34927 | iFog GmbH | Hosting | IPv4 | 41 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 41 |
| AS48185 | team.blue NV | Unclassified | IPv4 | 41 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 | 41 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 | 41 |
| AS50673 | Serverius Holding B.V. | Unclassified | IPv4 | 41 |
| AS59919 | Brainbox S.r.l. | Residential | IPv4 | 41 |
| AS212024 | Marc Schmitt | Unclassified | IPv4 | 41 |
| AS9002 | RETN Limited | Unclassified | IPv6 | 2 |
| AS29632 | Netassist International EOOD | Unclassified | IPv6 | 2 |
| AS8966 | EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC | Mobile | IPv4 | 1 |
| AS25091 | IP-Max SA | Unclassified | IPv6 | 1 |
| AS34019 | Hivane Association | Unclassified | IPv6 | 1 |
| AS213241 | TECHIT.BE SRL | Residential | IPv6 | 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.