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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 | 168 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 340 |
| AS212238GB | CDNEXT Datacamp Limited | 1M | 4,120 |
| — |
| 1 |
| 1 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |
| AS203504GB | Tomas-Freitas-Fernandes Tomas Freitas Fernandes | — | 3 | 3 |
| AS206637GB | IQIP-AS CSL (DualCom) Limited | — | — | 0 |
| AS202235GB | CSD-COMMS UK On-line Agri-sales Limited | — | 65.5K | 1 |
| AS206036GB | DRT-EXCHANGE Digital Realty (UK) Limited | — | — | 0 |
| AS209507GB | REALLY-AWESOME-TECHNOLOGY Really Awesome Technology LTD | — | 1 | 1 |
| AS206136GB | CLOUDSRV-NORTH Clouvider Limited | — | — | 0 |
| AS210961GB | SIGN4 Nathan York | — | 1 | 1 |
| AS215600GB | KTTCARRIER KTT Europe Limited | — | 65.5K | 1 |
| AS214731GB | ETO-AS ETO Networks Limited | — | 601 | 41 |
| AS62079GB | RAPIDIX Inferno Communications Ltd | — | — | 0 |
| AS200499GB | EHL-AS Enterprises Holding LTD | — | 1 | 1 |
| AS28673GB | SIXDG-NWF Six Degrees Technology Group Limited | — | — | 0 |
| AS47326GB | KTT-CARRIER-ASN KTT Carrier Limited | — | 65.6K | 3 |
| AS211658GB | STRATUS_AS Unity World Ltd | — | — | 0 |
| AS206848GB | UKCDN Clouvider Limited | — | 256 | 1 |
| AS211879GB | NJRYCE Nicholas Ryce | — | 1 | 1 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS31532GB | SKYBET-AS Hestview Limited | — | — | 0 |
| AS208665GB | TELEKLINE-AS Gareth Pulham | — | 2 | 2 |
| AS204725GB | luna-frankland Luna Frankland | — | 1 | 1 |
| AS197613GB | NMARSHALL-AS Nicholas Marshall | — | 17 | 2 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS200927GB | ProxyOmega ProxyOmega LTD | — | 65.5K | 1 |
| AS214514GB | HENRYCLARKE Henry Clarke | — | 16 | 1 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS214018GB | IIC-AS INTERNET INTELLIGENCE COMPANY LTD | — | 1 | 1 |
| AS202627GB | CARBONDNS Fika Studio Limited | — | 1 | 1 |
| AS204375GB | Adam-Goodenough Adam Goodenough | — | 17 | 2 |
| AS197239GB | ClearNet HYPERLXC MEDICAL LTD | — | 1 | 1 |
| AS205648GB | VirgoCube_Limited VirgoCube Limited | — | 256 | 1 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS43255GB | FSA-UK-AS Assured Guaranty UK Limited | — | — | 0 |
| AS214749GB | PAW James Cahill | — | 6 | 6 |
| AS210683GB | syo Syo.io Limited | — | 1 | 1 |
| AS205383GB | PERRYNET Rhys Perry | — | 1 | 1 |
| AS199804GB | TFES-AS THE FIRST EAST STAR LTD | — | 1 | 1 |
| AS215158GB | SIXNET-OP2 Sixnet Operation Ltd | — | 65.5K | 1 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS207427GB | IBILLY-MEDIA-GROUP-LTD IBILLY MEDIA GROUP LTD | — | 1 | 1 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS198174GB | VEAN-AS Vean Networks Ltd | — | 1 | 1 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 69.2K | 19 |