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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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| AS214834GB | Rekade-Networks LASTRESPONSE LTD | — | — | 0 |
| AS203031GB | AKIX-RS AKAERE NETWORKS TECHNOLOGY LTD | — | — | 0 |
| AS202695GB | MODERN-UK Modern Networks Services Ltd | — | — | 0 |
| AS8457GB | INDEXSCOPE LIMITED | — | — | 0 |
| AS204407GB | Zhero ZHERO Limited | — | — | 0 |
| AS212806GB | stratagem VeloxServ Communications Ltd | — | 64 | 1 |
| AS60012GB | GDSV vXtream Ltd | — | — | 0 |
| AS212391GB | CentralNic-Anycast-K CentralNic Ltd | — | — | 0 |
| AS212475GB | COMCAST-UK Comcast International Holdings UK Limited | — | — | 0 |
| AS209149GB | SEEKAHOST SEEKAHOST LTD | — | — | 0 |
| AS212931GB | OSCARMUSICRAND Oscar Music & Media Ltd. | — | — | 0 |
| AS60759GB | IAASRUN-EMEA-AS Netsapiens International Limited | — | — | 0 |
| AS206848GB | UKCDN Clouvider Limited | — | — | 0 |
| AS204660GB | Tiger-Technologies-Limited Tiger Technologies Limited | — | 1 | 1 |
| AS44218GB | CTBY-ASN China Telecom Europe Ltd. | — | — | 0 |
| AS39553GB | BLUEPRINTGAMING Blueprint Gaming Ltd. | — | — | 0 |
| AS43157GB | URBANWIMAX-NET Telcom Networks Limited | — | — | 0 |
| AS15635GB | YAHOO-UKL Yahoo-UK Limited | — | — | 0 |
| AS45828GB | WORLDREACH Hello World Ltd | — | — | 0 |
| AS49738GB | NETROX-AS 3nt solutions LLP | — | — | 0 |
| AS33898GB | TMOBILE-AS EE Limited | — | — | 0 |
| AS210683GB | syo Syo.io Limited | — | 1 | 1 |
| AS36287GB | IIX-BNIIX-RS - IX Reach Ltd | — | — | 0 |
| AS204931GB | PNOSOLUTIONS-AS PNO Solutions Limited | — | 8 | 2 |
| AS202867GB | Sugarnet Voneus Ltd | — | — | 0 |
| AS199210GB | EY-DE-NGDC-1 EY Global Services Limited | — | — | 0 |
| AS401583GB | COMBEST - Combest Peak Properties, LLC | — | — | 0 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS47933GB | CommIdea Verifone (U.K.) Limited | — | — | 0 |
| AS42987GB | O2Business Virgin Media Limited | — | — | 0 |
| AS43835GB | NCC NCC Services Ltd | — | — | 0 |
| AS31562GB | OPENMARKET OpenMarket Limited | — | — | 0 |
| AS29506GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS16755GB | The-London-Metal-Exchange The London Metal Exchange | — | — | 0 |
| AS39192GB | JackNet John Hadrill | — | — | 0 |
| AS198722GB | TXRX-AS 1310 Limited | — | — | 0 |
| AS6675GB | COLT-FRANCE-AS COLT Technology Services Group Limited | — | — | 0 |
| AS215963GB | torin Torin Storkey | — | — | 0 |
| AS5571GB | NETCOM GTT - EMEA Ltd. | — | — | 0 |
| AS213202GB | The-Cloud-Systems-Group Cloudnet Computing Ltd | — | — | 0 |
| AS212992GB | blueprint_as Blueprint Gaming Ltd. | — | — | 0 |
| AS199423GB | nexttranslate-as NEXTTRANSLATE LTD | — | — | 0 |
| AS8835GB | VITRIFI Vitrifi Limited | — | — | 0 |
| AS215127GB | TEAPOT 410 Teapot Limited | — | 16 | 1 |
| AS208442GB | ITCOM UK Intis Telecom LTD | — | — | 0 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |