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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
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 | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 100 |
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| AS206792GB | ZACH Zachary Buller | — | 16 | 1 |
| AS43157GB | URBANWIMAX-NET Telcom Networks Limited | — | — | 0 |
| AS59811GB | Voneus Voneus Ltd | — | — | 0 |
| AS39553GB | BLUEPRINTGAMING Blueprint Gaming Ltd. | — | — | 0 |
| AS47762GB | westcloud-AS CCPRO Solutions Limited | — | — | 0 |
| AS44981GB | Oosha Oosha Ltd | — | — | 0 |
| AS211209GB | EUROPEANEDGE-IX AIRBYTES COMMUNICATIONS Limited | — | — | 0 |
| AS212475GB | COMCAST-UK Comcast International Holdings UK Limited | — | — | 0 |
| AS200279GB | DOUWES-NET Thomas Douwes | — | 18 | 3 |
| AS197040GB | DATAART-BEG DataArt Technologies UK Ltd | — | — | 0 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS5519GB | Wavenet-AS5519 Wavenet Limited | — | — | 0 |
| AS207140GB | SKYENET Sleat Community Trust | — | — | 0 |
| AS205630GB | NOVECORE Novecore Ltd. | — | — | 0 |
| AS201980GB | UNION-AS Claranet Limited | — | — | 0 |
| AS209035GB | TITANIUM PRT Systems Limited | — | — | 0 |
| AS200299GB | BASESERV-AS BaseServ Limited | — | 1 | 1 |
| AS199507GB | THALES-DNSP Thales UK Limited | — | — | 0 |
| AS197872GB | EA-NL-AMSTERDAM_DC Electronic Arts Limited | — | — | 0 |
| AS198653GB | SOLARAPPS-AS SOLARAPPS LTD | — | — | 0 |
| AS8546GB | YOUR-COMMS-UK-AS Vodafone Limited | — | — | 0 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS213803GB | AS-Xray Xray Network Ltd | — | — | 0 |
| AS213585GB | NULLPTR-AS Null Pointer Limited | — | — | 0 |
| AS212222GB | CentralNic-Anycast-I CentralNic Ltd | — | — | 0 |
| AS56533GB | NetCracker-AS Netcracker Technology EMEA Limited | — | — | 0 |
| AS198557GB | ONETTL George French | — | 1 | 1 |
| AS52037GB | y-internet Blackbridge Limited | — | — | 0 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS50445GB | WIREFAST Wirefast Limited | — | — | 0 |
| AS43367GB | IWEB-HOSTING Interactive Web Solutions Ltd | — | — | 0 |
| AS43198GB | OUTSOURCERY-AS GCI Network Solutions Limited | — | — | 0 |
| AS31716GB | AS31716 Qube Research and Technologies Limited | — | — | 0 |
| AS47584GB | STELIA Stelia Ltd | — | — | 0 |
| AS20629GB | UK-BIS Six Degrees Technology Group Limited | — | — | 0 |
| AS9248GB | NHL-AS2 Netwise Hosting Ltd | — | — | 0 |
| AS25041GB | AWS-DX British Telecommunications PLC | — | — | 0 |
| AS35269GB | vx-london VELOCIX SOLUTIONS LIMITED | — | — | 0 |
| AS2529GB | DEMON-INTERNET - IDDQD-AS | — | — | 0 |
| AS215499GB | richard-franks Richard Franks | — | — | 0 |
| AS213863GB | SmartIXPRouteServers SMARTNET LIMITED | — | — | 0 |
| AS16036GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 260 | 5 |
| AS211986GB | Athlok-BGP-Collector Athlok Ltd | — | — | 0 |
| AS201258GB | CRYPTIDZ Chaos Cupit | — | — | 0 |
| AS214834GB | Rekade-Networks LASTRESPONSE LTD | — | — | 0 |