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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.
3,123 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications PLC | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS212238GB | CDNEXT Datacamp Limited | 968.4K | 3,979 |
| 768 |
| — |
| 3 |
| AS204193GB | Pragma Gamma Telecom Holdings Ltd | 768 | — | 3 |
| AS41246GB | EMS-AS Electronic Media Services Ltd | 768 | — | 3 |
| AS48553GB | MARKETAXESS Marketaxess Europe Ltd | 768 | — | 3 |
| AS41415GB | square-enix Square Enix Limited | 768 | — | 3 |
| AS209557GB | GEELINX-AS GEELINX LTD | 768 | 2 | 5 |
| AS206479GB | AceRDP AceRDP Ltd | 768 | — | 3 |
| AS206467GB | PROTECH-COMMS Protech Communications Ltd | 768 | — | 3 |
| AS64415GB | CONNECTBIT-AS Ashgoal Limited | 768 | — | 3 |
| AS206187GB | DIA-ASN Interactive Investor Services Limited | 768 | — | 3 |
| AS214467GB | digided-as DIGIDED LTD | 768 | — | 3 |
| AS204928GB | AS-BONSAIHOST Bonsai Hosting ltd | 768 | 65.5K | 4 |
| AS59952GB | ExpediaEU Expedia.com Ltd. | 768 | — | 3 |
| AS206372GB | ORCA-AS Orca IT Ltd | 768 | — | 3 |
| AS212240GB | RIKNETWORKS RIK Networks Ltd | 768 | — | 3 |
| AS44548GB | CMCMarkets-AS CMC MARKETS PLC | 768 | — | 3 |
| AS212169GB | TECH-RMMINET CARDOCK HOSTING LIMITED | 768 | — | 3 |
| AS205756GB | JLR JAGUAR LAND ROVER AUTOMOTIVE PLC | 768 | — | 3 |
| AS206798GB | UK-Huawei HUAWEI TECHNOLOGIES(UK)CO.,LTD | 768 | — | 2 |
| AS49487GB | ZTELAS IMBIL CONSULTANCY SERVICES LIMITED | 768 | — | 3 |
| AS211678GB | MYFI-AS Michaelston y Fedw Internet CIC | 768 | 524.3K | 3 |
| AS15490GB | SHANEMCC Shane Mc Cormack | 768 | 524.3K | 3 |
| AS34934GB | UKFast ANS ACADEMY LIMITED | 768 | — | 3 |
| AS49911GB | AS-CDNSQUARED CDN Squared Limited | 768 | — | 3 |
| AS16339GB | VI-UK Virtual Internet (UK) Limited | 768 | — | 3 |
| AS49490GB | CIRCLENET-AS Circlenet LLP | 768 | 65.5K | 3 |
| AS48628GB | CoreISP CoreISP Group Limited | 768 | 524.3K | 4 |
| AS203035GB | xc360 Xara Computers (UK) Ltd | 768 | — | 3 |
| AS202901GB | NETCALL Netcall Technology Limited | 768 | — | 3 |
| AS44980GB | AS44980 Paul Cairney | 768 | — | 3 |
| AS211955GB | NOTBADHOSTING NOTBAD HOSTING LTD | 768 | — | 3 |
| AS201409GB | hostshield HOSTSHIELD LTD | 768 | — | 3 |
| AS205944GB | ISAM1 ISAM FUNDS (UK) LIMITED | 768 | — | 3 |
| AS34099GB | ROAD-TECH-COMPUTER-SYSTEMS Road Tech Computer Systems Ltd. | 768 | — | 2 |
| AS58051GB | Zume Alpha Internet Limited | 768 | 131.1K | 5 |
| AS207009GB | UK-FUTURE Future Publishing Ltd | 768 | 65.5K | 3 |
| AS8336GB | InnovationGrpEMEA THE INNOVATION GROUP (EMEA) LTD | 768 | — | 3 |
| AS48090GB | DMZHOST TECHOFF SRV LIMITED | 768 | — | 3 |
| AS202364GB | gridh Grid Hosting Limited | 768 | — | 3 |
| AS210495GB | WENIUM WENIUM LTD | 768 | 16 | 4 |
| AS201226GB | LEASINGOPTIONSLTD-AS Leasing Options Limited | 768 | — | 2 |
| AS204050GB | Yoti Yoti Ltd | 768 | 1 | 4 |
| AS210511GB | blue-telecoms Direct Market Solutions Limited | 768 | — | 3 |
| AS203516GB | AltunHOST AltunHOST LTD | 768 | — | 3 |
| AS197669GB | CLOUDCALL-UK-AS CloudCall LTD | 768 | 3 | 6 |
| AS201864GB | as-trench MINHOCO 84 LIMITED | 768 | — | 3 |
| AS211058GB | threatspike-cloud-uk ThreatSpike Labs Limited | 768 | — | 3 |