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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 |
| — |
| 17 |
| 2 |
| AS8550GB | LONAP-MLP LONAP Ltd | — | — | 0 |
| AS213074GB | IPXO-Testing-ASN Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS212437GB | ADL ADT Defence Limited | — | — | 0 |
| AS202487GB | HPN HP Networks Ltd | — | — | 0 |
| AS47918GB | MCDEU03 MCD Europe Limited | — | — | 0 |
| AS25307GB | Equinix-Metro-Z EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS210516GB | KARMACOMPUTING Karma Computing Ltd | — | — | 0 |
| AS209536GB | Marex-SA-AS Spectron Services Limited | — | — | 0 |
| AS200299GB | BASESERV-AS BaseServ Limited | — | — | 0 |
| AS211149GB | legendfibre Talk Straight Ltd. | — | — | 0 |
| AS214931GB | ALUE-NET ALUE LTD | — | 1 | 1 |
| AS203164GB | Traveljigsaw-Ltd Booking.com Transport Limited | — | — | 0 |
| AS210090GB | PIPER-AS Zack Piper | — | — | 0 |
| AS200681GB | IXMIDS-ROUTESRV IX Midlands Ltd | — | — | 0 |
| AS30746GB | NAT-MORRIS Nat Morris | — | — | 0 |
| AS202415GB | IDSI-2 Integrated Digital Services Ltd | — | — | 0 |
| AS199534GB | INTERFIBER-CI Interfiber Ltd | — | — | 0 |
| AS6847GB | VODAFONE-VONE-C Vodafone Enterprise Equipment Limited | — | — | 0 |
| AS200840GB | chronara-ai-8663 Chronara AI Ltd | — | 1 | 1 |
| AS218191GB | MOOREQUALITY-AS MOORE QUALITY ENGINEERING LTD | — | — | 0 |
| AS41255GB | Alanyhq-Networks-AS Alanyhq Networks Limited | — | 1 | 1 |
| AS213863GB | SmartIXPRouteServers SMARTNET LIMITED | — | — | 0 |
| AS211986GB | Athlok-BGP-Collector Athlok Ltd | — | — | 0 |
| AS211284GB | JOSH_MILES Joshua Miles | — | — | 0 |
| AS201258GB | CRYPTIDZ Chaos Cupit | — | — | 0 |
| AS209869GB | OLLIES_CLOUD Ollie's Cloud LTD | — | — | 0 |
| AS6675GB | COLT-FRANCE-AS COLT Technology Services Group Limited | — | — | 0 |
| AS219022GB | FREEVPN FREE VPN GLOBAL LTD | — | — | 0 |
| AS211687GB | HCORE-LTD HCORE LTD | — | — | 0 |
| AS214818GB | WILL-WILSON William Wilson | — | 9 | 5 |
| AS214409GB | ZEKTRA-AS Zektra Networks Ltd | — | — | 0 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS212759GB | ASN-Trogon Trogon Group Ltd | — | — | 0 |
| AS60977GB | NVIDIA-NGN NVIDIA Ltd | — | — | 0 |
| AS59894GB | INSTINETEUROPE-AS Instinet Europe Ltd | — | — | 0 |
| AS49374GB | BFD-IX Konstantin Verba | — | — | 0 |
| AS60477GB | SIXDG-INSITE Six Degrees Technology Group Limited | — | — | 0 |
| AS215499GB | richard-franks Richard Franks | — | 1 | 1 |
| AS16755GB | The-London-Metal-Exchange The London Metal Exchange | — | — | 0 |
| AS8897GB | KCOM-SPN KCOM Group Limited | — | — | 0 |
| AS15463GB | NETWORKI-AS Virtustream UK Ltd | — | — | 0 |
| AS198796GB | PEARSON-HARPER Phusion IM Limited | — | — | 0 |
| AS198332GB | HOSTINGSYSTEMS-AS32 Hosting Systems Ltd | — | — | 0 |
| AS49999GB | BANDWIDTHTECH-AS Hydra Communications Ltd | — | — | 0 |
| AS6749GB | DEMON-INTERNET Vodafone Limited | — | — | 0 |
| AS215619GB | RCD-AS RED COKE DEVELOPMENT LTD | — | 4 | 4 |