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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.
3,134 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 173 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 368 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,290 |
| — |
| 6 |
| 4 |
| AS198657GB | GOHEGAN-NET Kai Gohegan | — | 257 | 2 |
| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 16 | 1 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS212121GB | VAGUE James Ray | — | 5 | 5 |
| AS48987GB | JYANGNET Jiaxun Yang | — | 1 | 1 |
| AS199129GB | DIRECTCONNECT-AS Direct Connect (ISP) Ltd | — | 1 | 1 |
| AS58339GB | MARIA-AS MARIA STYLE LTD | — | 1.4K | 33 |
| AS215022GB | FWLB-networks Jamie Hosker | — | 1 | 1 |
| AS205649GB | TOSLER-NET Shaun Tosler | — | 1 | 1 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS202235GB | CSD-COMMS UK On-line Agri-sales Limited | — | 65.5K | 1 |
| AS202443GB | WINE-AS WINE AND FOOD PARTNERS LTD | — | — | 0 |
| AS29202GB | Empics PA Media Group Ltd | — | — | 0 |
| AS197753GB | QUADV-AS QuadV Ltd | — | — | 0 |
| AS52076GB | ALGOSPAN-AS PICO GLOBAL LTD. | — | — | 0 |
| AS49503GB | IDE-GROUP-MANAGE MAINFRAME & CYBERNETIC SYSTEMS LIMITED | — | — | 0 |
| AS47999GB | TCL-AS Verint Systems UK Limited | — | — | 0 |
| AS43178GB | TECHNOLABS Technolabs Networks Ltd. | — | — | 0 |
| AS31402GB | BlueSquare Rank Digital Limited | — | — | 0 |
| AS24778GB | Datapipe-UK Rackspace Ltd. | — | — | 0 |
| AS16351GB | JUNO-AS George Vorres | — | — | 0 |
| AS197958GB | Ogilvie-Communications NET DEFENCE LIMITED | — | — | 0 |
| AS208886GB | RIPL-AS Rhodes Island Pharmaceutical Ltd | — | — | 0 |
| AS205750GB | Threadneedle_Asset_Management_Holdings_Ltd Threadneedle Asset Management Holdings Ltd | — | — | 0 |
| AS203945GB | ThomasFranklin-AS Thomas Franklin | — | — | 0 |
| AS201316GB | AIGLOBALMEDIALTD A.I. Global Media Ltd | — | — | 0 |
| AS199066GB | DATA8-AS Data8 Limited | — | — | 0 |
| AS63041GB | IIX-SFIIX-RS - IX Reach Ltd | — | — | 0 |
| AS62189GB | INNETRA-EU Elna Paulette Valentin trading as INNETRA PC | — | — | 0 |
| AS219070GB | gbevm Eximia Networks Limited | — | 8 | 8 |
| AS206925GB | CentralNic-GRX-A CentralNic Ltd | — | — | 0 |
| AS208707GB | WATANIA WATANIA LTD | — | — | 0 |
| AS213074GB | IPXO-Testing-ASN Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS9191GB | NEWNET Digital Space Group Limited | — | — | 0 |
| AS213673GB | WAISE-AS WAISE EUROPE LTD | — | — | 0 |
| AS215397GB | JA-Software-Solutions-Limited JA Software Solutions Limited | — | — | 0 |
| AS13217GB | VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS25307GB | Equinix-Metro-Z EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS35545GB | Clouvider-Anycast Clouvider Limited | — | — | 0 |
| AS50711GB | SYN-ANY SYN LTD | — | — | 0 |
| AS56726GB | fouron 4on LTD | — | — | 0 |
| AS199534GB | INTERFIBER-CI Interfiber Ltd | — | — | 0 |
| AS201327GB | H2NET ATN COMMUNICATIONS LIMITED | — | — | 0 |
| AS142290GB | AGARTHATELEKOMLTD-AS-AP - AGARTHA TELEKOM LTD | — | 1 | 1 |
| AS219494GB | HACKWORTH_UK_2 Hackworth Ltd | — | 2 | 2 |