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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.
3,134 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 173 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 368 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,290 |
| 256 |
| 1 |
| 2 |
| AS198189GB | STEALTHVM Throttle Limited | 256 | 1 | 2 |
| AS205885GB | cnetas01 Cloudnet IT Solutions Ltd | 256 | 65.5K | 2 |
| AS3206GB | AFB-AS AF Blakemore & Son Ltd | 256 | — | 1 |
| AS204387GB | EG-AS Evolution Gaming LTD | 256 | — | 1 |
| AS212733GB | Netquirk Netquirk Limited | 256 | — | 1 |
| AS207846GB | Lauren-Kelly Lauren Renee Kelly | 256 | 1 | 2 |
| AS48460GB | GREENCO-DR ServerHouse Ltd | 256 | — | 1 |
| AS216121GB | VALKYRIEHOSTING-AS Valkyrie Hosting LTD | 256 | — | 1 |
| AS47791GB | EA-FI-HELSINKI Electronic Arts Limited | 256 | — | 1 |
| AS59617GB | ANDYD Andy Davidson | 256 | 1 | 2 |
| AS150325GB | TSUKUDANI-NETWORK - TSUKUDANI NETWORK | 256 | 4 | 5 |
| AS209771GB | SYSN SYSN LTD | — | 1 | 1 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS200708GB | PROTEUS-AS Hugo Rodrigues Da Costa | — | 1 | 1 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 6 | 4 |
| AS207529GB | NyanLoliNetwork NYANLOLI LTD | — | 573 | 14 |
| AS198276GB | Lazuline Jordan Robert | — | 2 | 2 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS198657GB | GOHEGAN-NET Kai Gohegan | — | 257 | 2 |
| AS203766GB | AWILLS Andrew Wills | — | 1 | 1 |
| AS211879GB | NJRYCE Nicholas Ryce | — | 1 | 1 |
| AS210387GB | GUARDY Guardy Limited | — | 4.1K | 1 |
| AS205058GB | MAEEKO MAGICAL NETWORK LIMITED | — | 5 | 4 |
| AS203504GB | Tomas-Freitas-Fernandes Tomas Freitas Fernandes | — | 2 | 2 |
| AS201616GB | theoh-as Theo Holroyd | — | 2 | 2 |
| AS211224GB | JB3 Joseph Banks | — | 17 | 2 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS218843GB | OMNIVISION-INTERNET-GATEWAY Omnivision Solutions Ltd | — | 338 | 8 |
| AS213436GB | NIUZI_DADA_CLOUD NIUZI DADA CLOUD LIMITED | — | 1K | 1 |
| AS214931GB | ALUE-NET ALUE LTD | — | 1 | 1 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 10 | 8 |
| AS214514GB | HENRYCLARKE Henry Clarke | — | 16 | 1 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 29 | 14 |
| AS206877GB | SharedGrid SharedGrid Ltd | — | 1 | 1 |
| AS200104GB | crow PETALDATA LTD | — | 1 | 1 |
| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS219370GB | Johnson Benjamin Johnson | — | 22 | 7 |
| AS216157GB | SIXNET-OP Sixnet Operation Ltd | — | 65.5K | 1 |
| AS202194GB | HORDEN-ENGINEERING Horden Engineering Limited | — | 1 | 1 |
| AS214749GB | PAW James Cahill | — | 7 | 7 |
| AS219361GB | SHIKANOKO-NETWORKS SHIKANOKO NETWORKS LTD | — | 1 | 1 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS208589GB | uk123lir ANT BM Limited | — | 1 | 1 |