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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.
3,123 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications PLC | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS212238GB | CDNEXT Datacamp Limited | 968.4K | 3,979 |
| 256 |
| 65.5K |
| 2 |
| AS62374GB | andymace Andy Mace | 256 | — | 1 |
| AS51005GB | FOURDINTERACTIVE 4D Interactive Ltd | 256 | — | 1 |
| AS201323GB | host-media-ltd Host Media Ltd | 256 | 65.5K | 2 |
| AS206754GB | Alistair-Mackenzie Alistair Mackenzie | 256 | 524.3K | 2 |
| AS44504GB | DEV-AS Andy Davidson | 256 | — | 1 |
| AS62112GB | XCONNECT-NL XConnect Services Limited | 256 | — | 1 |
| AS44617GB | HBK-London HBK EUROPE MANAGEMENT LLP | 256 | — | 1 |
| AS61283GB | MILLAR Andrew Millar Ltd | 256 | 1 | 2 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS208589GB | uk123lir ANT BM Limited | — | 1 | 1 |
| AS203504GB | Tomas-Freitas-Fernandes Tomas Freitas Fernandes | — | 4 | 4 |
| AS211879GB | NJRYCE Nicholas Ryce | — | 1 | 1 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 30 | 15 |
| AS199794GB | EMO-AS EMOCLOUD LTD | — | 272 | 2 |
| AS209771GB | SYSN SYSN LTD | — | 2 | 2 |
| AS206877GB | SharedGrid SharedGrid Ltd | — | 1 | 1 |
| AS211224GB | JB3 Joseph Banks | — | 17 | 2 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS204293GB | TinyHomeLab TinyHomeLab Ltd | — | 1 | 1 |
| AS210387GB | GUARDY Guardy Limited | — | 4.1K | 1 |
| AS200708GB | GLASSIO-AS Hugo Rodrigues Da Costa | — | 1 | 1 |
| AS205058GB | MAEEKO MAGICAL NETWORK LIMITED | — | 5 | 4 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 16 | 7 |
| AS198276GB | Lazuline Jordan Robert | — | 1 | 1 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS214731GB | ETO-AS ETO Networks Limited | — | 633 | 43 |
| AS198657GB | GOHEGAN-NET Kai Gohegan | — | 257 | 2 |
| AS216157GB | SIXNET-OP Sixnet Operation Ltd | — | 65.5K | 1 |
| AS214457GB | veesix-networks Veesix Networks Ltd | — | 524.3K | 1 |
| AS208485GB | PINHOUSE-AS PINHOUSE LIMITED | — | 1 | 1 |
| AS215002GB | PRISMGG PRISM.GG Limited | — | 80 | 2 |
| AS214749GB | PAW James Cahill | — | 6 | 6 |
| AS203766GB | AWILLS Andrew Wills | — | 1 | 1 |
| AS207586GB | DOYLE-AS Doyle (North West) Ltd. | — | 16 | 1 |
| AS215127GB | TEAPOT 410 Teapot Limited | — | 16 | 1 |
| AS202194GB | HORDEN-ENGINEERING Horden Engineering Limited | — | 1 | 1 |
| AS201616GB | theoh-as Theo Holroyd | — | 2 | 2 |
| AS214931GB | ALUE-NET ALUE NETWORK LIMITED | — | 1 | 1 |
| AS206392GB | HACKWORTH_UK Hackworth Ltd | — | 50 | 4 |
| AS207529GB | NyanLoliNetwork NYANLOLI LTD | — | 67 | 19 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS214514GB | HENRYCLARKE Henry Clarke | — | 16 | 1 |
| AS200104GB | crow You are never Limited | — | 4.1K | 1 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 20 | 12 |