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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 |
| AS202176GB | tradetech FINALTO TRADING LIMITED | — | — | 0 |
| AS219070GB | gbevm Eximia Networks Limited | — | 4.1K | 8 |
| AS218602GB | SMARTYHOME Martyn Axon | — | 1 | 1 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS215158GB | SIXNET-OP2 Sixnet Operation Ltd | — | 65.5K | 1 |
| AS215619GB | RCD-AS RED COKE DEVELOPMENT LTD | — | 4 | 4 |
| AS25085GB | ALUE-NET ALUE LTD | — | 12 | 12 |
| AS210338GB | PIXSAL-AS Kieran Breeze | — | 3 | 3 |
| AS214749GB | PAW James Cahill | — | 6 | 6 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 28 | 16 |
| AS209808GB | LUKE Luke James | — | 64 | 1 |
| AS210683GB | syo Syo Limited | — | 1 | 1 |
| AS215363GB | Wles Wles Technologies Ltd | — | 257 | 2 |
| AS198741GB | AMELIAK Amelia Kalinowska | — | 1 | 1 |
| AS198768GB | OASISINFO-AS OASIS INFOTECH LIMITED | — | 2 | 2 |
| AS199804GB | TFES-AS THE FIRST EAST STAR LTD | — | 1 | 1 |
| AS47999GB | TCL-AS Verint Systems UK Limited | — | — | 0 |
| AS29026GB | CTAYLOR-AS CHARLES TAYLOR LIMITED | — | — | 0 |
| AS34407GB | WAVECREST-AS01 Wavecrest Networks Limited | — | — | 0 |
| AS48562GB | EQUINIX-CLOUD-EXCHANGE-DUBAI-ASN EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS49503GB | IDE-GROUP-MANAGE MAINFRAME & CYBERNETIC SYSTEMS LIMITED | — | — | 0 |
| AS198729GB | B4SH Broadband for Surrey Hills Ltd | — | — | 0 |
| AS200143GB | KWZTECH KWZ Technologies Ltd. | — | — | 0 |
| AS202488GB | balticbroadband Baltic Broadband Limited | — | — | 0 |
| AS205750GB | Threadneedle_Asset_Management_Holdings_Ltd Threadneedle Asset Management Holdings Ltd | — | — | 0 |
| AS206900GB | APLNET Applecross Community Company | — | — | 0 |
| AS211597GB | Litfibre Lit Fibre Group Ltd. | — | — | 0 |
| AS12433GB | ORBTALK Telappliant Limited | — | — | 0 |
| AS29202GB | Empics PA Media Group Ltd | — | — | 0 |
| AS30897GB | Pentagon-Systems RDS Global Limited | — | — | 0 |
| AS39148GB | NET1000-AS Synapse Network LTD | — | — | 0 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS132006GB | DIOM-AS-AP - Domicilium (IOM) Ltd | — | — | 0 |
| AS198136GB | FIX-RS Alioth Systems Limited | — | — | 0 |
| AS60897GB | MEDIRECT Binary Racks Limited | — | — | 0 |
| AS197753GB | QUADV-AS QuadV Ltd | — | — | 0 |
| AS210187GB | KEVINRICHARDSON-AS Kevin Richardson | — | — | 0 |
| AS212437GB | ADL ADT Defence Limited | — | — | 0 |
| AS214332GB | IXMidlands-Route-Servers Exascale Ltd | — | — | 0 |
| AS212263GB | AS-ROCKETFIBRE Rocket Fibre Ltd | — | — | 0 |
| AS213509GB | ARESHOSTING ARES HOSTING LIMITED | — | — | 0 |
| AS218234GB | SHANLEY-AS SHANLEY CAPITAL LTD | — | — | 0 |
| AS218886GB | PIIN-AS Pulsant Limited | — | — | 0 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 69.2K | 19 |
| AS205909GB | Phystrax-Network Phystrax Ltd | — | 64 | 1 |
| AS207268GB | STREXP STRATEGIC EXPLORATIONS LTD | — | 24 | 6 |