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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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| AS205909GB | Phystrax-Network Phystrax Ltd | — | 64 | 1 |
| AS214819GB | BUZZSTER Buzzster Ltd | — | — | 0 |
| AS34041GB | BMA-ORG-UK British Medical Association | — | — | 0 |
| AS214544GB | LKF-AS LAN KWAI FONG NETWORK CO., LTD | — | — | 0 |
| AS200099GB | ASN-EXTLIKES Extlikes UK Marketing Limited | — | — | 0 |
| AS13017GB | CABLE-AND-WIRELESS VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS8709GB | VF-VPNPLUS VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS214073GB | heart-internet-uk Heart Internet limited | — | — | 0 |
| AS198741GB | AMELIAK Amelia Kalinowska | — | 1 | 1 |
| AS216217GB | baltic Baltic Networks Limited | — | — | 0 |
| AS215387GB | A2ES-AS Adrian Fretwell | — | — | 0 |
| AS207328GB | THRIVE-UK2 THRIVE OPERATIONS LIMITED | — | — | 0 |
| AS210453GB | VLXTEST VeloxServ Communications Ltd | — | — | 0 |
| AS210440GB | Akaere-NetWork AKAERE NETWORKS TECHNOLOGY LTD | — | — | 0 |
| AS208680GB | LONIX-LTD London IX Limited | — | — | 0 |
| AS212784GB | Marykirk-com Buchan Consultancy Services Ltd | — | — | 0 |
| AS202939GB | CHIMON-NETWORK Chimon Technology Ltd | — | 848 | 20 |
| AS204078GB | scylla David Tagg-Oram | — | — | 0 |
| AS198768GB | OASISINFO-AS OASIS INFOTECH LIMITED | — | 2 | 2 |
| AS214665GB | PROJECT-PC Adam Beddall | — | — | 0 |
| AS210396GB | broadwaypartners Voneus Ltd | — | — | 0 |
| AS209417GB | TIANHAI-EU Tianhai Infotech Ltd | — | — | 0 |
| AS206036GB | DRT-EXCHANGE Digital Realty (UK) Limited | — | — | 0 |
| AS211131GB | as_globaltechinterapps LOBOS NETWORKING LTD | — | — | 0 |
| AS214818GB | WILL-WILSON William Wilson | — | 2 | 1 |
| AS197976GB | FAVBET-AS Favbet Invest LLP | — | — | 0 |
| AS199688GB | CRITPERF-AS Critical Perfect Ltd | — | 16 | 1 |
| AS197040GB | DATAART-BEG DataArt Technologies UK Ltd | — | — | 0 |
| AS50871GB | IXBRADFORD IXBRADFORD LIMITED | — | — | 0 |
| AS201258GB | CRYPTIDZ Chaos Cupit | — | — | 0 |
| AS62273GB | IXMIDLANDS-ROUTESRV SRVNET LTD | — | — | 0 |
| AS59811GB | Voneus Voneus Ltd | — | — | 0 |
| AS205897GB | HOSTOWEB HOSTOWEB LTD | — | — | 0 |
| AS44402GB | GFINET-AS GFI Holdings Limited | — | — | 0 |
| AS39139GB | Menzies-Aviation-PLC-AS Menzies Aviation Plc | — | — | 0 |
| AS212426GB | FWNETWORKS-AS Hey Broadband LTD | — | — | 0 |
| AS12554GB | EASYNET-BE GTT - EMEA Ltd. | — | — | 0 |
| AS12290GB | EXONETRIC Exonetric Consulting Ltd | — | — | 0 |
| AS42271GB | VANCO-UK-AS3 Flag Telecom UK Limited | — | — | 0 |
| AS51170GB | Natterbox-net Red Matter Limited | — | — | 0 |
| AS205474GB | CARR Jack Carr | — | 1 | 1 |
| AS209035GB | TITANIUM PRT Systems Limited | — | — | 0 |
| AS205630GB | NOVECORE Novecore Ltd. | — | — | 0 |
| AS207200GB | Krisdev Kristian Hoyle-Johnson | — | — | 0 |
| AS201729GB | VALE-AS VALERUS LTD | — | — | 0 |
| AS201690GB | CallWithMe-AS CALLWITHME LTD. | — | — | 0 |