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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.
3,132 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 173 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 369 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,286 |
| 768 |
| — |
| 2 |
| AS206499GB | LOCIX LOCIX LIMITED | 768 | 180.5K | 29 |
| AS64415GB | CONNECTBIT-AS Ashgoal Limited | 768 | — | 3 |
| AS60464GB | SUPERNET-UK SUPERNET UK LIMITED | 768 | — | 3 |
| AS43525GB | TRENCHANT-AS Oculon LLP | 768 | — | 3 |
| AS203219GB | YAHOO-AMA Yahoo-UK Limited | 768 | 1 | 4 |
| AS202364GB | gridh Grid Hosting Limited | 768 | — | 3 |
| AS219141GB | ROCKET-MARINICA ROCKET & MARINICA LTD | 768 | — | 3 |
| AS212890GB | AetherCloud ONEMAN NETWORK LIMITED | 768 | 5 | 8 |
| AS212169GB | TECH-RMMINET CARDOCK HOSTING LIMITED | 768 | — | 3 |
| AS49487GB | ZTELAS IMBIL CONSULTANCY SERVICES LIMITED | 768 | — | 3 |
| AS199492GB | EASYINTERNET Easy Internet Solutions Limited | 768 | — | 2 |
| AS43428GB | YAHOO-ULS Yahoo-UK Limited | 768 | 1 | 4 |
| AS43408GB | OCD-UK Orange Cyberdefense UK Limited | 768 | 1 | 4 |
| AS205944GB | ISAM1 ISAM FUNDS (UK) LIMITED | 768 | — | 3 |
| AS207009GB | UK-FUTURE Future Publishing Ltd | 768 | 65.5K | 3 |
| AS204204GB | uk_point72uklimited Point72 UK Limited | 768 | — | 3 |
| AS203070GB | YAHOO-FRA Yahoo-UK Limited | 768 | 1 | 4 |
| AS196809GB | FM FremantleMedia Limited | 768 | — | 3 |
| AS42457GB | ascdck1 CARDOCK HOSTING LIMITED | 768 | — | 3 |
| AS201867GB | OXAGON-AS OXAGON LIMITED | 768 | — | 3 |
| AS200105GB | JUNGLELABS JUNGLELABS LTD | 768 | 9 | 12 |
| AS214861GB | CloudExa-Hosting CloudExa-Hosting LTD | 768 | — | 3 |
| AS8296GB | HBVB HBVB Private Unlimited | 768 | — | 3 |
| AS219200GB | CRYPHORA-AS Cryphora Limited | 768 | — | 3 |
| AS204050GB | Yoti Yoti Ltd | 768 | 1 | 4 |
| AS201409GB | hostshield HOSTSHIELD LTD | 768 | — | 3 |
| AS200552GB | ACKLO Acklo Ltd | 768 | — | 3 |
| AS60952GB | connexcs Connex Carrier Services (Worldwide) Limited | 768 | — | 3 |
| AS48090GB | DMZHOST TECHOFF SRV LIMITED | 768 | — | 3 |
| AS210511GB | blue-telecoms Direct Market Solutions Limited | 768 | — | 3 |
| AS202630GB | SequentialNetworksUK Sequential Networks Limited | 768 | — | 3 |
| AS49490GB | CIRCLENET-AS Circlenet LLP | 768 | 65.5K | 3 |
| AS44980GB | AS44980 Paul Cairney | 768 | — | 3 |
| AS203035GB | xc360 Xara Computers (UK) Ltd | 768 | — | 3 |
| AS205294GB | ThermoFisher Thermo Electron Ltd | 768 | — | 2 |
| AS47296GB | HiFX-AS HIFX EUROPE LIMITED | 768 | — | 3 |
| AS204928GB | AS-BONSAIHOST Bonsai Hosting ltd | 768 | 65.5K | 4 |
| AS215672GB | MoeChuang-Network MoeChuang Network Limited | 768 | 17 | 5 |
| AS204242GB | TRUTECS-AS Trutec Services | 768 | — | 3 |
| AS59907GB | IMSHealth IQVIA SOLUTIONS HQ LTD | 768 | — | 3 |
| AS15490GB | SHANEMCC Shane Mc Cormack | 768 | 524.3K | 3 |
| AS206187GB | DIA-ASN Interactive Investor Services Limited | 768 | — | 3 |
| AS202154GB | brevanhoward Brevan Howard Asset Management LLP | 768 | — | 3 |
| AS59920GB | LUSORY Lusory Limited | 768 | 4.1K | 4 |
| AS202901GB | NETCALL Netcall Technology Limited | 768 | — | 3 |
| AS59952GB | ExpediaEU Expedia.com Ltd. | 768 | — | 3 |