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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 |
| — |
| 80 |
| 2 |
| AS202627GB | CARBONDNS Fika Studio Limited | — | 1 | 1 |
| AS219157GB | SHRDSERV Global Capital Services Ltd. | — | 65.8K | 4 |
| AS218705GB | BGPEX Jeremy Gumbley | — | 1 | 1 |
| AS212711GB | NETSPAWN Daniel Terrence Thorpe | — | — | 0 |
| AS210961GB | SIGN4 Nathan York | — | 1 | 1 |
| AS148971GB | KEIBIIN-AS-AP - Keibiin's Holdings Limited | — | 313 | 13 |
| AS215499GB | richard-franks Richard Franks | — | 1 | 1 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 8 | 5 |
| AS209210GB | SoftProg Softprog IT Ltd | — | — | 0 |
| AS43336GB | ASPIXIE PIXIE NETWORKS LTD | — | 524.3K | 1 |
| AS205474GB | CARR Jack Carr | — | 1 | 1 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS208098GB | GPS THREDD UK LIMITED | — | — | 0 |
| AS212867GB | SIPALTO Sipalto Ltd | — | — | 0 |
| AS213626GB | BIONIC-NETWORK Bionic.Network Ltd | — | 2 | 2 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS34202GB | CLOUVIDER-THN2 Clouvider Limited | — | 1 | 1 |
| AS204446GB | HELLOMOUSE Hellomouse Ltd | — | 6 | 6 |
| AS12290GB | EXONETRIC Exonetric Consulting Ltd | — | 65.5K | 1 |
| AS199481GB | K3-RIPE-AS Node4 Hosting Limited | — | — | 0 |
| AS200279GB | DOUWES-NET Thomas Douwes | — | 5 | 5 |
| AS211166GB | asserizyweb LOBOS NETWORKING LTD | — | — | 0 |
| AS205468GB | GAM-UK-LTD GAM (U.K.) Limited | — | — | 0 |
| AS199746GB | SHRDSERV SharedServ Ltd | — | — | 0 |
| AS199464GB | MCMAH McMahon (UK) Ltd. | — | — | 0 |
| AS153833GB | GCXGINDIAPRIVATELIMITED-AS-IN - GCXG INDIA PRIVATE LIMITED | — | — | 0 |
| AS197839GB | RAXEL-AS RAXEL LIMITED | — | — | 0 |
| AS48071GB | NORTHCOTE-AS Northcote Internet Limited | — | — | 0 |
| AS214018GB | IIC-AS INTERNET INTELLIGENCE COMPANY LTD | — | 1 | 1 |
| AS211789GB | eVerify-Ltd EVERIFY Limited | — | — | 0 |
| AS134458GB | EDGENAP1-AS-AP - EDGENAP LTD | — | — | 0 |
| AS218633GB | DIGITAL-AND-MEDIA-LIMITED Digital and Media Limited | — | — | 0 |
| AS199291GB | BCDS GCI Network Solutions Limited | — | — | 0 |
| AS209600GB | AS209600 Livefix Technical Solutions Group Limited | — | 32 | 2 |
| AS57751GB | packets_global Andrews & Arnold Ltd | — | — | 0 |
| AS56614GB | FRESHFIELDS-ASN Freshfields Bruckhaus Deringer LLP | — | — | 0 |
| AS203766GB | AWILLS Andrew Wills | — | 1 | 1 |
| AS209507GB | REALLY-AWESOME-TECHNOLOGY Really Awesome Technology LTD | — | 1 | 1 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS216126GB | James-Ledger James Ledger | — | 13 | 13 |
| AS25061GB | ANLX-UK Associated Networks (UK) Limited | — | — | 0 |
| AS59893GB | FRC-AS Free Range Cloud Ltd. | — | 4 | 4 |
| AS8656GB | PSINetEurope TELSTRA UK LIMITED | — | — | 0 |
| AS8472GB | BT-GERMANY-NGN British Telecommunications Limited | — | — | 0 |
| AS209601GB | XiaoYuanNET XiaoYuan Networks Limited | — | 6 | 6 |