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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.
3,143 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 172 |
| AS212238GB | CDNEXT Datacamp Limited | 1.2M | 4,613 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 404 |
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| 0 |
| AS50799GB | REED-BUSINESS LNRS Data Services Limited | — | — | 0 |
| AS204853GB | SurreyHillsInternet HFLBroadband Ltd | — | — | 0 |
| AS199507GB | THALES-DNSP Thales UK Limited | — | — | 0 |
| AS198299GB | Kooljett-AS Kooljett Limited | — | — | 0 |
| AS203665GB | UKMOD UK Ministry of Defence | — | — | 0 |
| AS200614GB | VRTS-GPK COHESITY INTERNATIONAL UK LIMITED | — | — | 0 |
| AS201980GB | UNION-AS Claranet Limited | — | — | 0 |
| AS60012GB | GDSV vXtream Ltd | — | — | 0 |
| AS59705GB | POBOX2-AS Acora Limited | — | — | 0 |
| AS50930GB | REDINET Redinet Limited | — | — | 0 |
| AS50534GB | VMO2 Virgin Media Limited | — | — | 0 |
| AS42902GB | GLOBECONNECT Clouvider Limited | — | — | 0 |
| AS43620GB | Syan Digital Space Group Limited | — | — | 0 |
| AS34041GB | BMA-ORG-UK British Medical Association | — | — | 0 |
| AS49900GB | Betfair-DC1 The Sporting Exchange (Clients) Ltd | — | — | 0 |
| AS198653GB | SOLARAPPS-AS SOLARAPPS LTD | — | — | 0 |
| AS59839GB | BROMLEYNET Bromleynet Limited | — | — | 0 |
| AS215474GB | BIIL-RU-AS BIIL RU LTD | — | — | 0 |
| AS41393GB | NASSTAR-AS GCI Network Solutions Limited | — | — | 0 |
| AS25041GB | AWS-DX British Telecommunications Limited | — | — | 0 |
| AS28786GB | ASN-INSL Endava (UK) Limited | — | — | 0 |
| AS202235GB | CSD-COMMS UK On-line Agri-sales Limited | — | 65.5K | 1 |
| AS218282GB | WESTTECH-AS WESTTECH LTD | — | — | 0 |
| AS213729GB | RikkiNet Rikki Network Limited | — | 1 | 1 |
| AS215388GB | Clevotec Clevotec Limited | — | — | 0 |
| AS210396GB | broadwaypartners Voneus Ltd | — | — | 0 |
| AS209417GB | TIANHAI-EU Tianhai Infotech Ltd | — | — | 0 |
| AS206136GB | CLOUDSRV-NORTH Clouvider Limited | — | — | 0 |
| AS212265GB | NCL-IX Stellium Networks Limited | — | — | 0 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS200174GB | AS_WISPEED Wispeed LTD | — | — | 0 |
| AS219387GB | ASANTI Asanti Datacentres Limited | — | — | 0 |
| AS197976GB | FAVBET-AS Favbet Invest LLP | — | — | 0 |
| AS51805GB | cantab Gam Systematic LLP | — | — | 0 |
| AS51170GB | Natterbox-net Red Matter Limited | — | — | 0 |
| AS213863GB | SmartIXPRouteServers SMARTNET LIMITED | — | — | 0 |
| AS203438GB | RGSL Regus Group Services Ltd | — | — | 0 |
| AS58285GB | ASSIXOP Sixnet Operation Ltd | — | 10.6M | 256 |
| AS12576GB | EE EE Limited | — | — | 0 |
| AS199916GB | DLG-HUB DL Insurance Services Limited | — | — | 0 |
| AS8576GB | CW-ASPAC Vodafone Limited | — | — | 0 |
| AS63022GB | IIX-SCIIX-RS - IX Reach Ltd | — | — | 0 |
| AS60180GB | NEW VPLAB LTD | — | — | 0 |
| AS25178GB | KEYCOM-AS WIFINITY LIMITED | — | — | 0 |
| AS5519GB | Wavenet-AS5519 Wavenet Limited | — | — | 0 |
| AS209606GB | BEYONDORBIT Beyond Orbit Ltd. | — | 3 | 3 |