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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 |
| AS201980GB | UNION-AS Claranet Limited | — | — | 0 |
| AS201930GB | ASN-TVAT VERTALA LTD | — | — | 0 |
| AS200639GB | Cross-Computing-Services Cross Computing Services Limited | — | — | 0 |
| AS5519GB | Wavenet-AS5519 Wavenet Limited | — | — | 0 |
| AS215127GB | TEAPOT 410 Teapot Limited | — | 16 | 1 |
| AS49900GB | Betfair-DC1 The Sporting Exchange (Clients) Ltd | — | — | 0 |
| AS42902GB | GLOBECONNECT Clouvider Limited | — | — | 0 |
| AS34846GB | ccore-as NEWS CORP UK & IRELAND LIMITED | — | — | 0 |
| AS24670GB | COHTECH01-AS Coherent Technology Solutions Limited | — | — | 0 |
| AS15565GB | GTT - EMEA Ltd. | — | — | 0 |
| AS8546GB | YOUR-COMMS-UK-AS Vodafone Limited | — | — | 0 |
| AS31270GB | FMN GCI Network Solutions Limited | — | — | 0 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS209363GB | skinark-as SKINARK LTD | — | — | 0 |
| AS206397GB | Genius-Guard Geniusx Ltd | — | — | 0 |
| AS12852GB | EASYNETES-AS GTT - EMEA Ltd. | — | — | 0 |
| AS204037GB | qernal Qernal LTD | — | — | 0 |
| AS202489GB | SDHL Shop Direct Holdings Limited | — | — | 0 |
| AS200535GB | INITARA-AS Initara Ltd | — | — | 0 |
| AS197173GB | HIGHLIGHT-NET HIGHLIGHT APPS LTD | — | — | 0 |
| AS203766GB | AWILLS Andrew Wills | — | 1 | 1 |
| AS50461GB | CITYTELECOM City Telecom LTD | — | — | 0 |
| AS50445GB | WIREFAST Wirefast Limited | — | — | 0 |
| AS39553GB | BLUEPRINTGAMING Blueprint Gaming Ltd. | — | — | 0 |
| AS202110GB | TP-PLC Travis Perkins Trading Company Limited | — | — | 0 |
| AS209022GB | Tschajera-Limited Tschajera Limited | — | 4.1K | 15 |
| AS8802GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS215231GB | volq-capital VolQ Capital Ltd | — | — | 0 |
| AS207328GB | THRIVE-UK2 THRIVE OPERATIONS LIMITED | — | — | 0 |
| AS212479GB | RaziNetwork RAZINETWORK LTD | — | — | 0 |
| AS212475GB | COMCAST-UK Comcast International Holdings UK Limited | — | — | 0 |
| AS2529GB | DEMON-INTERNET - IDDQD-AS | — | — | 0 |
| AS213863GB | SmartIXPRouteServers SMARTNET LIMITED | — | — | 0 |
| AS209858GB | IPCHECKBOX-LTD IPCHECKBOX LTD | — | — | 0 |
| AS201258GB | CRYPTIDZ Chaos Cupit | — | — | 0 |
| AS197976GB | FAVBET-AS Favbet Invest LLP | — | — | 0 |
| AS200174GB | AS_WISPEED Wispeed LTD | — | — | 0 |
| AS57932GB | IXLEEDS-ROUTE-SERVER-AS IXLeeds Limited | — | — | 0 |
| AS57114GB | DEDISHACK Dedishack Ltd | — | — | 0 |
| AS45828GB | WORLDREACH Hello World Ltd | — | — | 0 |
| AS25041GB | AWS-DX British Telecommunications PLC | — | — | 0 |
| AS59566GB | LogicForge LogicForge Limited | — | 8.2K | 1 |
| AS49738GB | NETROX-AS 3nt solutions LLP | — | — | 0 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS44981GB | Oosha Oosha Ltd | — | — | 0 |
| AS35143GB | BICOMDOO Bicom Systems Limited | — | — | 0 |