Upstream networks
AS2856 BT-UK-AS BTnet UK Regional network
Residential DROP-listed space RIPE NSP
Transit
Upstream networks
Networks observed carrying traffic for AS2856: 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 |
|---|---|---|---|---|
| AS5400 | British Telecommunications Limited | Unclassified | IPv4 IPv6 | 22,595 |
| AS9002 | RETN Limited | Unclassified | IPv4 IPv6 | 3,811 |
| AS6461 | Zayo Bandwidth | Transit | IPv4 IPv6 | 1,096 |
| AS50304 | Blix Solutions AS | Unclassified | IPv4 IPv6 | 1,084 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 IPv6 | 1,076 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 547 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 IPv6 | 545 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 | 542 |
| AS6206 | Netrouting B.V. | Hosting | IPv4 | 539 |
| AS25180 | Exponential-E Ltd. | Unclassified | IPv4 | 32 |
| AS13030 | Init7 (Switzerland) Ltd. | Hosting | IPv6 | 7 |
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.