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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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| 0 |
| AS198536GB | LUDIC-LABS Bekalu Terefe | — | — | 0 |
| AS38966GB | IntraLAN-AS IntraLAN Group Limited | — | — | 0 |
| AS207200GB | Krisdev Kristian Hoyle-Johnson | — | — | 0 |
| AS202990GB | WEB42 Web42 Solutions Ltd | — | — | 0 |
| AS60714GB | TELNA-UK TELNA (UK) LTD | — | — | 0 |
| AS60210GB | THIRDCIRCLE-AS Third Circle Ltd | — | — | 0 |
| AS39295GB | SWIP-AS Southern Communications Ltd | — | — | 0 |
| AS60012GB | GDSV vXtream Ltd | — | — | 0 |
| AS216442GB | uk-ngaconnect NGA Connect Limited | — | — | 0 |
| AS34890GB | ASOS-AS ASOS.COM Limited | — | — | 0 |
| AS8898GB | WHAN High-Speed Universal Broadband Services C.I.C. | — | — | 0 |
| AS201508GB | Connexin Connexin Limited | — | — | 0 |
| AS31270GB | FMN GCI Network Solutions Limited | — | — | 0 |
| AS25346GB | Tiscali-AS TalkTalk Communications Limited | — | — | 0 |
| AS216073GB | Bradford-Broadband-Systems-Ltd Bradford Broadband Systems Ltd | — | — | 0 |
| AS24670GB | COHTECH01-AS Coherent Technology Solutions Limited | — | — | 0 |
| AS9105GB | TISCALI-UK TalkTalk Communications Limited | — | — | 0 |
| AS47762GB | westcloud-AS CCPRO Solutions Limited | — | — | 0 |
| AS215231GB | volq-capital VolQ Capital Ltd | — | — | 0 |
| AS212171GB | Local-as Local NCC Ltd. | — | — | 0 |
| AS211658GB | STRATUS_AS Unity World Ltd | — | — | 0 |
| AS206509GB | KCOM-UK-AS KCOM Group Limited | — | — | 0 |
| AS215474GB | BIIL-RU-AS BIIL RU LTD | — | — | 0 |
| AS48961GB | WarwickNet Glide Student & Residential Limited | — | 65.5K | 1 |
| AS201164GB | Cool-Studio Cool Studio Limited | — | — | 0 |
| AS197595GB | SEEKAHOST-TECH SEEKAHOST TECHNOLOGIES LTD | — | — | 0 |
| AS198372GB | wowfi-as Futility Ltd | — | — | 0 |
| AS57932GB | IXLEEDS-ROUTE-SERVER-AS IXLeeds Limited | — | — | 0 |
| AS57114GB | DEDISHACK Dedishack Ltd | — | — | 0 |
| AS197677GB | BENWELL-AS Mr David John Benwell | — | — | 0 |
| AS60759GB | IAASRUN-EMEA-AS Netsapiens International Limited | — | — | 0 |
| AS49134GB | AS_10VPN 10VPN Research Network LTD | — | 22 | 4 |
| AS202818GB | Level3Communications Lumen Technologies UK Limited | — | — | 0 |
| AS212426GB | FWNETWORKS-AS Hey Broadband LTD | — | — | 0 |
| AS44402GB | GFINET-AS GFI Holdings Limited | — | — | 0 |
| AS34158GB | BBC-RD-NONUK-AS BBC | — | — | 0 |
| AS12576GB | EE EE Limited | — | — | 0 |
| AS8276GB | VONESERVICES Vone Services Ltd | — | — | 0 |
| AS212759GB | ASN-Trogon Trogon Group Ltd | — | — | 0 |
| AS207067GB | Gigasonic Commsworld Ltd | — | 65.5K | 1 |
| AS209149GB | SEEKAHOST SEEKAHOST LTD | — | — | 0 |
| AS215012GB | ROEBUCK Roebuck Group Limited | — | — | 0 |
| AS208533GB | CSSUK Clear Street Services UK LTD | — | — | 0 |
| AS213725GB | UK-03AI 03AI LTD | — | — | 0 |
| AS213696GB | INTERNETBACKBONE-AS Internet Backbone LTD | — | — | 0 |
| AS212010GB | XCOMMUK X.COMMunications Ltd. | — | — | 0 |