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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United Kingdom over time.
The largest autonomous systems registered to United Kingdom by IPv4 footprint.
United Kingdom against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
3,143 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 172 |
| AS212238GB | CDNEXT Datacamp Limited | 1.2M | 4,613 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 404 |
| 1 |
| 1 |
| AS209507GB | REALLY-AWESOME-TECHNOLOGY Really Awesome Technology LTD | — | 1 | 1 |
| AS214818GB | WILL-WILSON William Wilson | — | 9 | 5 |
| AS140590GB | DSSPL-AS-AP - DGT Services Singapore PTE Ltd. | — | — | 0 |
| AS200927GB | ProxyOmega ProxyOmega LTD | — | 65.5K | 1 |
| AS62979GB | IIX-GAIIX-RS - IX Reach Ltd | — | — | 0 |
| AS200840GB | chronara-ai-8663 Chronara AI Ltd | — | 1 | 1 |
| AS60381GB | PANA-AS Pana Services Ltd | — | — | 0 |
| AS219327GB | DISASTER Disaster Limited | — | 1 | 1 |
| AS43551GB | AMT AMT DataTechnologies Limited | — | — | 0 |
| AS205909GB | Phystrax-Network Phystrax Ltd | — | 64 | 1 |
| AS199686GB | aaroncarson Aaron Carson | — | 18 | 3 |
| AS43827GB | EnvAgency Environment Agency | — | — | 0 |
| AS25085GB | ALUE-NET ALUE LTD | — | 12 | 12 |
| AS25314GB | CCUK1 Clear Connect Limited | — | — | 0 |
| AS211224GB | JB3 Joseph Banks | — | 17 | 2 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS215619GB | RCD-AS RED COKE DEVELOPMENT LTD | — | 4 | 4 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS59566GB | LogicForge LogicForge Limited | — | 8.2K | 1 |
| AS42173GB | Yahoo-Switzerland Yahoo-UK Limited | — | — | 0 |
| AS210985GB | BISHOP Christopher Bishop | — | 2 | 2 |
| AS49134GB | AS_10VPN 10VPN Research Network LTD | — | 2 | 2 |
| AS198174GB | VEAN-AS Vean Networks Ltd | — | 1 | 1 |
| AS210338GB | PIXSAL-AS Kieran Breeze | — | 3 | 3 |
| AS218495GB | mindspit Rhys Jenkins | — | 2 | 2 |
| AS219456GB | TALANA-VLV Talana Labs Ltd | — | — | 0 |
| AS207268GB | STREXP STRATEGIC EXPLORATIONS LTD | — | 24 | 6 |
| AS204345GB | STALLARD Timothy Stallard | — | 1 | 1 |
| AS198741GB | AMELIAK Amelia Kalinowska | — | 1 | 1 |
| AS219370GB | Johnson Benjamin Johnson | — | 22 | 7 |
| AS218748GB | OSCAR-BRADLEY Oscar Lewis Bradley | — | — | 0 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS212474GB | Daniella-Smithson Daniella Smithson | — | — | 0 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS9105GB | TISCALI-UK TalkTalk Communications Limited | — | — | 0 |
| AS209771GB | SYSN SYSN LTD | — | 5 | 5 |
| AS8546GB | YOUR-COMMS-UK-AS Vodafone Limited | — | — | 0 |
| AS205058GB | MAEEKO MAGICAL NETWORK LIMITED | — | 5 | 4 |
| AS213447GB | The-Aster-Institute-of-Education ASTER GLOBAL CO. LTD | — | — | 0 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS215631GB | qxtellimited QXTEL Limited | — | — | 0 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS198064GB | ZEROPACKETS-LTD ZEROPACKETS LTD | — | — | 0 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 28 | 16 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 28 | 13 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |