Adjacent networks
AS2856 BT-UK-AS BTnet UK Regional network
Residential DROP-listed space RIPE
Adjacency
Adjacent networks
Every AS seen directly next to AS2856 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS5400 | British Telecommunications Limited | Unclassified | IPv4 IPv6 | 35,474 |
| AS9002 | RETN Limited | Unclassified | IPv4 IPv6 | 6,028 |
| AS6871 | British Telecommunications Limited | Residential | IPv4 IPv6 | 3,665 |
| AS50304 | Blix Solutions AS | Unclassified | IPv4 IPv6 | 1,812 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 IPv6 | 1,699 |
| AS6461 | Zayo Bandwidth | Transit | IPv4 IPv6 | 1,644 |
| AS2134 | Santander Global Technology and Operations, S.L. | Unclassified | IPv4 | 1,003 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 964 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 | 917 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 IPv6 | 904 |
| AS49318 | TELEFONICA TECH UK MANAGED SERVICES LTD | Unclassified | IPv4 | 826 |
| AS6206 | Netrouting B.V. | Hosting | IPv4 | 810 |
| AS54113 | Fastly, Inc. | Hosting | IPv4 IPv6 | 736 |
| AS201536 | SANDYX SYSTEMS LIMITED | Unclassified | IPv4 IPv6 | 626 |
| AS25049 | Shell Information Technology International B.V. | Unclassified | IPv4 | 472 |
| AS21369 | Atos IT Services UK Ltd | Unclassified | IPv4 | 387 |
| AS202206 | FAT MEDIA LTD | Unclassified | IPv4 | 343 |
| AS28863 | Thales UK Limited | Unclassified | IPv4 | 295 |
| AS199675 | Willis Group Services Ltd | Unclassified | IPv4 | 295 |
| AS28690 | Barclays Bank PLC | Unclassified | IPv4 | 285 |
| AS3573 | Accenture LLP | Unclassified | IPv6 | 267 |
| AS15248 | Metaswitch Networks Corp. | Unclassified | IPv4 IPv6 | 250 |
| AS35707 | Scottish Power UK PLC | Unclassified | IPv4 | 244 |
| AS57002 | William Hill Organization Ltd | Unclassified | IPv4 | 242 |
| AS36224 | HCL AMERICA INC | Unclassified | IPv4 | 236 |
| AS39550 | KPMG LLP | Unclassified | IPv4 | 236 |
| AS198386 | THRIVE OPERATIONS LIMITED | Unclassified | IPv4 | 228 |
| AS14931 | The St. Paul Travelers Companies, Inc. | Unclassified | IPv4 | 224 |
| AS20705 | HSBC Bank plc | Unclassified | IPv4 IPv6 | 197 |
| AS212329 | Netcraft Ltd | Unclassified | IPv4 IPv6 | 184 |
| AS206237 | Barclays Bank PLC | Unclassified | IPv4 | 183 |
| AS16525 | KBR | Unclassified | IPv4 | 177 |
| AS39552 | WBA (IT Services) International Limited | Unclassified | IPv4 | 177 |
| AS205114 | The WEST Retail group LImited | Unclassified | IPv4 | 177 |
| AS212565 | Specsavers Optical Group Limited | Unclassified | IPv4 | 177 |
| AS12440 | Hughes Network Systems GmbH | Unclassified | IPv4 | 122 |
| AS10235 | National Australia Bank Limited | Unclassified | IPv4 | 118 |
| AS15141 | Bausch & Lomb | Unclassified | IPv4 | 118 |
| AS15499 | Computacenter Management GmbH trading as Computacenter AG & Co.oHG | Unclassified | IPv4 | 118 |
| AS17903 | Cognizant Technology Solutions India Pvt Ltd, | Unclassified | IPv4 | 118 |
| AS19428 | Phillips 66 Company | Unclassified | IPv4 | 118 |
| AS33981 | Total System Services Processing Europe Limited | Unclassified | IPv4 | 118 |
| AS43259 | Leidos Innovations UK LTD | Unclassified | IPv4 | 118 |
| AS48549 | Bringo Group Ltd | Unclassified | IPv4 | 118 |
| AS60962 | Foreign and Commonwealth Office | Unclassified | IPv4 | 118 |
| AS206024 | RELX GROUP PLC | Unclassified | IPv4 | 118 |
| AS209761 | North of England Commissioning Support Unit | Unclassified | IPv4 | 118 |
| AS211077 | UK Home Office (The Secretary of State for the Home Department) | Unclassified | IPv4 | 118 |
| AS213786 | IDASH SOLUTIONS LIMITED | Unclassified | IPv4 | 118 |
| AS11939 | THE MATHWORKS, INC. | Unclassified | IPv4 | 108 |
Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.
Derived from routing tables collected at 2026-10-18 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.