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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 |
| — |
| 5 |
| 5 |
| AS39420GB | AIRBYTES AIRBYTES COMMUNICATIONS Limited | — | — | 0 |
| AS8548GB | AS8548 Jisc Services Limited | — | — | 0 |
| AS6757GB | MULTIMSG Vodafone Enterprise Equipment Limited | — | — | 0 |
| AS201567GB | Cinnabar Vivian Band | — | 1 | 1 |
| AS216073GB | Bradford-Broadband-Systems-Ltd Bradford Broadband Systems Ltd | — | — | 0 |
| AS215323GB | SGM SGM STUDIOS LTD | — | — | 0 |
| AS210208GB | EA-CH-GENEVA Electronic Arts Limited | — | — | 0 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS206307GB | aeromobile Aeromobile Communications Limited | — | — | 0 |
| AS205552GB | AS_BITS LOTS OF BITS LTD | — | — | 0 |
| AS203397GB | curveit CURVE INFORMATION TECHNOLOGY LIMITED | — | — | 0 |
| AS201798GB | ABINTERNET Bogons Ltd | — | — | 0 |
| AS198796GB | PEARSON-HARPER Phusion IM Limited | — | — | 0 |
| AS61245GB | lovehosting Yorkshire Tech Limited | — | — | 0 |
| AS44474GB | Spectron-Services-Ltd Marex Financial Ltd | — | — | 0 |
| AS49807GB | LANDMARK-PLC Elementa Workspace Limited | — | — | 0 |
| AS56365GB | CME-AS-LD4-2 CME Operations Limited | — | — | 0 |
| AS21327GB | H3GUKnIE Hutchison 3G UK Limited | — | — | 0 |
| AS8180GB | EDGENIX-AS Edgenix LTD | — | — | 0 |
| AS218896GB | MICHAEL-SIMPSON MICHAEL SIMPSON | — | — | 0 |
| AS215195GB | EIRESINGA-SHIELD-LIMITED EIRESINGA SHIELD LIMITED | — | — | 0 |
| AS212244GB | IP6net IP6net Ltd | — | — | 0 |
| AS208021GB | Chris-Allen Chris Allen | — | — | 0 |
| AS207525GB | sausage Sausage Systems Ltd | — | — | 0 |
| AS211591GB | AS_ANYCAST Free Range Cloud Ltd. | — | — | 0 |
| AS211307GB | Fibreme Upp Corporation Limited | — | — | 0 |
| AS209762GB | EVIX-Route-Server 10VPN Research Network LTD | — | — | 0 |
| AS208386GB | coast-uk Coast Connect Ltd | — | — | 0 |
| AS205224GB | JEB90 James Buckley | — | — | 0 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS203465GB | HEIDMAR-CORE Heidmar UK Limited | — | — | 0 |
| AS218562GB | Tecvon-NET Tecvon Ltd | — | — | 0 |
| AS39215GB | TRANSTELLIGENCE Astutium Limited | — | — | 0 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS29131GB | RAPIDSWITCH-AS IOMART CLOUD SERVICES LIMITED | — | — | 0 |
| AS6847GB | VODAFONE-VONE-C Vodafone Enterprise Equipment Limited | — | — | 0 |
| AS219356GB | TOLLON Tollon Limited | — | — | 0 |
| AS219526GB | Jakenet Jake Turner | — | 1 | 1 |
| AS218448GB | VOZORA-AS Bankside Technology LTD | — | — | 0 |
| AS203036GB | GPS-2 THREDD UK LIMITED | — | — | 0 |
| AS198658GB | Cooper_Networks Elliott Cooper | — | — | 0 |
| AS63053GB | IIX-AZIIX-RS - IX Reach Ltd | — | — | 0 |
| AS58064GB | SHELLS 24Shells Limited | — | — | 0 |
| AS51391GB | Tommy-Bowditch Tommy Bowditch | — | — | 0 |
| AS43219GB | KRYSTAL Krystal Hosting Ltd | — | — | 0 |
| AS208051GB | SR2COM SR2 Communications Limited | — | 16 | 1 |