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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 | 168 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 340 |
| AS212238GB | CDNEXT Datacamp Limited | 1M | 4,120 |
| — |
| 5 |
| 4 |
| AS29009GB | UKBROADBAND-AS UK Broadband Ltd. | — | — | 0 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS17102GB | IIX-LABS - IX Reach Ltd | — | — | 0 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS215909GB | AS-EDGENIX Edgenix LTD | — | — | 0 |
| AS214457GB | veesix-networks Veesix Networks Ltd | — | — | 0 |
| AS9191GB | NEWNET Digital Space Group Limited | — | — | 0 |
| AS214931GB | ALUE-NET ALUE NETWORK LIMITED | — | 1 | 1 |
| AS35462GB | BDX Brighton Digital Exchange Cooperative Limited | — | — | 0 |
| AS50445GB | WIREFAST Wirefast Limited | — | — | 0 |
| AS211879GB | NJRYCE Nicholas Ryce | — | 1 | 1 |
| AS20547GB | SIXDG-AS Six Degrees Technology Group Limited | — | — | 0 |
| AS15482GB | GTT - EMEA Ltd. | — | — | 0 |
| AS16162GB | LONDONWEB London Web Ltd | — | — | 0 |
| AS199875GB | EA-ES-MAD Electronic Arts Limited | — | — | 0 |
| AS199853GB | HOSTIQOR-AS Hostiqor Limited | — | — | 0 |
| AS61977GB | PATH-GLOBAL-UK-LIMITED Path Global UK Limited | — | — | 0 |
| AS201811GB | LAURINTAPP-AS LAURINTAPP LTD | — | — | 0 |
| AS199794GB | EMO-AS EMOCLOUD LTD | — | 528 | 3 |
| AS205552GB | AS_BITS LOTS OF BITS LTD | — | — | 0 |
| AS203031GB | AKIX-RS AKAERE NETWORKS TECHNOLOGY LTD | — | — | 0 |
| AS203880GB | HEBNET Hebnet CIC | — | — | 0 |
| AS196628GB | EFAR-Manchester Southern Communications Ltd | — | — | 0 |
| AS62979GB | IIX-GAIIX-RS - IX Reach Ltd | — | — | 0 |
| AS60640GB | EQUINIX-CLOUD-EXCHANGE-DUBLIN-ASN EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS35269GB | vx-london VELOCIX SOLUTIONS LIMITED | — | — | 0 |
| AS214749GB | PAW James Cahill | — | 6 | 6 |
| AS3344GB | BURSTFIRE Burstfire Networks Ltd | — | — | 0 |
| AS34728GB | Cinven Cinven Services Limited | — | — | 0 |
| AS55212GB | IIX-WVIIX-RS - IX Reach Ltd | — | — | 0 |
| AS202937GB | uk-scripps Discovery Corporate Services Limited | — | — | 0 |
| AS214514GB | HENRYCLARKE Henry Clarke | — | 16 | 1 |
| AS61972GB | stixinternet STIX Internet Ltd | — | — | 0 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 20 | 12 |
| AS57014GB | metroswitch 4on LTD | — | — | 0 |
| AS43565GB | JumboIX IPTP LTD | — | — | 0 |
| AS41614GB | TELEDESIGN-AS Teledesign Solutions Ltd | — | — | 0 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 69.2K | 19 |
| AS47918GB | MCDEU03 MCD Europe Limited | — | — | 0 |
| AS210387GB | GUARDY Guardy Limited | — | 4.1K | 1 |
| AS203423GB | innoix INNOIX LTD | — | — | 0 |
| AS203113GB | ORG-BFL6-RIPE BlueWave Fibre Ltd | — | — | 0 |
| AS198796GB | PEARSON-HARPER Phusion IM Limited | — | — | 0 |
| AS199843GB | MINDTHECLOUD-AS Mindthecloud Ltd | — | — | 0 |
| AS203164GB | Traveljigsaw-Ltd Booking.com Transport Limited | — | — | 0 |
| AS44445GB | AS44445 AS44445 LTD | — | — | 0 |