Upstream networks
AS51409 SIPSYNERGY
Unclassified RIPE NSP
Transit
Upstream networks
Networks observed carrying traffic for AS51409: 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 |
|---|---|---|---|---|
| AS13335 | Cloudflare, Inc. | Hosting | IPv4 | 260 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 | 145 |
| AS2914 | NTT America, Inc. | Transit | IPv4 | 127 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 | 64 |
| AS34549 | meerfarbig GmbH & Co. KG | Hosting | IPv4 | 24 |
| AS50304 | Blix Solutions AS | Unclassified | IPv4 | 16 |
| AS3216 | PJSC "Vimpelcom" | Mobile | IPv4 | 8 |
| AS3741 | Dimension Data | Unclassified | IPv4 | 8 |
| AS4657 | StarHub Ltd | Residential | IPv4 | 8 |
| AS12552 | GlobalConnect AB | Unclassified | IPv4 | 8 |
| AS12779 | IT.Gate S.p.A. | Unclassified | IPv4 | 8 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 | 8 |
| AS24482 | SG.GS | Hosting | IPv4 | 8 |
| AS33891 | Core-Backbone GmbH | Hosting | IPv4 | 8 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 8 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 | 8 |
| AS48185 | team.blue NV | Unclassified | IPv4 | 8 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 | 8 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 | 8 |
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 2026-10-30 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.49M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.