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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 |
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| AS214811GB | BetInvest-AS Bet Invest LTD | — | — | 0 |
| AS211149GB | legendfibre Talk Straight Ltd. | — | — | 0 |
| AS6763GB | SKY-GROUP-BACKBONE-AS Sky UK Limited | — | — | 0 |
| AS210993GB | AS210993 SPACECORE SOLUTION LTD | — | — | 0 |
| AS206986GB | GLOBALCDN Clouvider Limited | — | — | 0 |
| AS204000GB | YAHOO-LOB Yahoo-UK Limited | — | — | 0 |
| AS201798GB | ABINTERNET Bogons Ltd | — | — | 0 |
| AS199534GB | INTERFIBER-CI Interfiber Ltd | — | — | 0 |
| AS56726GB | fouron 4on LTD | — | — | 0 |
| AS50711GB | SYN-ANY SYN LTD | — | — | 0 |
| AS35545GB | Clouvider-Anycast Clouvider Limited | — | — | 0 |
| AS25307GB | Equinix-Metro-Z EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS13217GB | VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS215397GB | JA-Software-Solutions-Limited JA Software Solutions Limited | — | — | 0 |
| AS213673GB | WAISE-AS WAISE EUROPE LTD | — | — | 0 |
| AS9191GB | NEWNET Digital Space Group Limited | — | — | 0 |
| AS213074GB | IPXO-Testing-ASN Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS208707GB | WATANIA WATANIA LTD | — | — | 0 |
| AS206925GB | CentralNic-GRX-A CentralNic Ltd | — | — | 0 |
| AS200427GB | PROXIMITY-AS Proximity Data Centres Limited | — | — | 0 |
| AS59634GB | ZETTA Zetta Connect Ltd | — | — | 0 |
| AS58120GB | FREEOLA FREEOLA LIMITED | — | — | 0 |
| AS42330GB | UNCHAINEDISP Unchained ISP Limited | — | — | 0 |
| AS24976GB | Techgate-Communications Claranet Limited | — | — | 0 |
| AS218754GB | THORN-HOSTING Thorn Hosting LTD | — | — | 0 |
| AS216442GB | uk-ngaconnect NGA Connect Limited | — | — | 0 |
| AS214005GB | MAINSTREAM-CIR-AS Mainstream Digital Ltd | — | — | 0 |
| AS203036GB | GPS-2 THREDD UK LIMITED | — | — | 0 |
| AS206895GB | PRIMONET-RESEARCH-AS Ashley Primo | — | — | 0 |
| AS206745GB | Shawdex Shawdex Ltd | — | — | 0 |
| AS203981GB | DIXIPAY-AS DIXIPAY LTD | — | — | 0 |
| AS203910GB | JTC-NET Jenson Cornhill | — | — | 0 |
| AS200614GB | VRTS-GPK COHESITY INTERNATIONAL UK LIMITED | — | — | 0 |
| AS35788GB | Forcepoint-Cloud-AMER-AS Forcepoint UK Limited | — | — | 0 |
| AS51782GB | VONEUS Voneus Ltd | — | — | 0 |
| AS46257GB | ATEX-ASN - Atex | — | — | 0 |
| AS34716GB | ANIX Timico Managed Services Limited | — | — | 0 |
| AS8709GB | VF-VPNPLUS VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS6757GB | MULTIMSG VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS216073GB | Bradford-Broadband-Systems-Ltd Bradford Broadband Systems Ltd | — | — | 0 |
| AS215387GB | A2ES-AS Adrian Fretwell | — | — | 0 |
| AS210440GB | Akaere-NetWork AKAERE NETWORKS TECHNOLOGY LTD | — | — | 0 |
| AS209274GB | Kraken-Network-ISP Kraken Network ISP LTD | — | — | 0 |
| AS204640GB | impelling Daniel Jackson | — | — | 0 |
| AS215323GB | SGM SGM STUDIOS LTD | — | — | 0 |
| AS203423GB | innoix INNOIX LTD | — | — | 0 |