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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 |
| AS214242GB | Jx Jiaxing Xing | — | 519 | 9 |
| AS210164GB | HUMZACJ HumzaCJ LTD | — | — | 0 |
| AS210683GB | syo Syo.io Limited | — | 1 | 1 |
| AS198535GB | NET-8E3 8E3 NETWORKS LTD | — | — | 0 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS200994GB | CLUB-AS-001 BNW TECHNOLOGY LTD | — | — | 0 |
| AS197166GB | GOTSCHNA-AS Gotschna Limited | — | 2 | 2 |
| AS196628GB | EFAR-Manchester Southern Communications Ltd | — | — | 0 |
| AS204946GB | GUFFNET ABSOLUTE GUFF LTD | — | 1 | 1 |
| AS215332GB | SNIFF122-AS Lewis Foster | — | 1 | 1 |
| AS212121GB | VAGUE James Ray | — | 4 | 4 |
| AS34406GB | VANCO-UK-AS2 Flag Telecom UK Limited | — | — | 0 |
| AS214018GB | IIC-AS INTERNET INTELLIGENCE COMPANY LTD | — | 1 | 1 |
| AS49819GB | SHOPZILLAEU Skimbit Ltd | — | — | 0 |
| AS204660GB | Tiger-Technologies-Limited Tiger Technologies Limited | — | 1 | 1 |
| AS42173GB | Yahoo-Switzerland Yahoo-UK Limited | — | — | 0 |
| AS215022GB | FWLB-networks Jamie Hosker | — | 1 | 1 |
| AS42129GB | SIXDG-SERVERSTREAM Six Degrees Technology Group Limited | — | — | 0 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS214073GB | heart-internet-uk Heart Internet limited | — | — | 0 |
| AS44754GB | SPACEMINE-AS SpaceMine Ltd | — | 1 | 1 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS213447GB | The-Aster-Institute-of-Education ASTER GLOBAL CO. LTD | — | 1 | 1 |
| AS200642GB | CAVL-AS Cavellon Ltd. | — | — | 0 |
| AS206877GB | SharedGrid SharedGrid Ltd | — | 1 | 1 |
| AS16036GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS199686GB | aaroncarson Aaron Carson | — | 1 | 1 |
| AS204345GB | STALLARD Timothy Stallard | — | 1 | 1 |
| AS213434GB | GALACTIX Rhys Woolcott | — | 16 | 1 |
| AS213863GB | SmartIXPRouteServers SMARTNET LIMITED | — | — | 0 |
| AS207067GB | Gigasonic Commsworld Ltd | — | 65.5K | 1 |
| AS15635GB | YAHOO-UKL Yahoo-UK Limited | — | — | 0 |
| AS207529GB | NyanLoliNetwork NYANLOLI LTD | — | 66 | 18 |
| AS215499GB | richard-franks Richard Franks | — | — | 0 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS215231GB | volq-capital VolQ Capital Ltd | — | — | 0 |
| AS205648GB | VirgoCube_Limited VirgoCube Limited | — | 256 | 1 |
| AS212177GB | AIRBYTES AIRBYTES COMMUNICATIONS Limited | — | — | 0 |
| AS142290GB | AGARTHATELEKOMLTD-AS-AP - AGARTHA TELEKOM LTD | — | 1 | 1 |
| AS212391GB | CentralNic-Anycast-K CentralNic Ltd | — | — | 0 |
| AS215363GB | Wles Wles Technologies Ltd | — | 257 | 2 |
| AS201696GB | SHAMILNET Shamil Nunhuck | — | — | 0 |
| AS201815GB | MEGADITTA ItalPetrolCemenTermoTessilFarmoMetalChimica LTD | — | 16 | 1 |
| AS199109GB | FruburyNet Guy Fenn-Newbury | — | 2 | 2 |
| AS204725GB | luna-frankland Luna Frankland | — | 2 | 2 |
| AS57927GB | UK-KECONNECT Digital Space Group Limited | — | — | 0 |