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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.
3,132 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 | 369 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,286 |
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| 1 |
| 1 |
| AS208121GB | VWMEDIA LOBOS NETWORKING LTD | — | — | 0 |
| AS208707GB | WATANIA WATANIA LTD | — | — | 0 |
| AS208311GB | BOURNELEISURE Bourne Leisure Limited | — | — | 0 |
| AS57014GB | metroswitch 4on LTD | — | — | 0 |
| AS25307GB | Equinix-Metro-Z EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS30746GB | NAT-MORRIS Nat Morris | — | — | 0 |
| AS12647GB | EIREFAST Orbital Net Ltd | — | — | 0 |
| AS9191GB | NEWNET Digital Space Group Limited | — | — | 0 |
| AS216254GB | GAZLEE Gary Lee | — | — | 0 |
| AS20629GB | UK-BIS Six Degrees Technology Group Limited | — | — | 0 |
| AS206202GB | NAMESERVERPARTY-AS Faelix Limited | — | 1 | 1 |
| AS203164GB | Traveljigsaw-Ltd Booking.com Transport Limited | — | — | 0 |
| AS199957GB | NATNET Nathan Lasseter | — | — | 0 |
| AS200681GB | IXMIDS-ROUTESRV IX Midlands Ltd | — | — | 0 |
| AS35662GB | IOMARTHOSTING Iomart Managed Services Limited | — | — | 0 |
| AS50935GB | International-Hosting-Solutions-AS INTERNATIONAL HOSTING SOLUTIONS LLP | — | — | 0 |
| AS199843GB | MINDTHECLOUD-AS Mindthecloud Ltd | — | — | 0 |
| AS211307GB | Fibreme Upp Corporation Limited | — | — | 0 |
| AS209600GB | AS209600 Livefix Technical Solutions Group Limited | — | 32 | 2 |
| AS212479GB | RaziNetwork RAZINETWORK LTD | — | — | 0 |
| AS213434GB | GALACTIX Rhys Woolcott | — | 17 | 2 |
| AS212426GB | FWNETWORKS-AS Hey Broadband LTD | — | — | 0 |
| AS211036GB | LSYS1 Nathan James | — | — | 0 |
| AS213660GB | elisamurphy Elisa Murphy | — | — | 0 |
| AS197040GB | DATAART-BEG DataArt Technologies UK Ltd | — | — | 0 |
| AS214705GB | Jamf JAMF LTD | — | — | 0 |
| AS401583GB | COMBEST - Combest Peak Properties, LLC | — | — | 0 |
| AS213756GB | MACARNE Macarne Limited | — | — | 0 |
| AS219018GB | gb-ducky Droidhub LTD | — | — | 0 |
| AS213767GB | RH Richard Humphries | — | 1 | 1 |
| AS218849GB | kent Eximia Networks Limited | — | — | 0 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS216116GB | vivoenergy-as Vivo Energy Ltd | — | — | 0 |
| AS56979GB | fulcrum Fulcrum Data Systems Ltd | — | — | 0 |
| AS212992GB | blueprint_as Blueprint Gaming Ltd. | — | — | 0 |
| AS210467GB | Alncom ALNWICK COMPUTERWARE LTD. | — | — | 0 |
| AS199766GB | JNET Julita Oskroba | — | — | 0 |
| AS199804GB | TFES-AS THE FIRST EAST STAR LTD | — | 1 | 1 |
| AS47947GB | WEHANDS-AS 3nt solutions LLP | — | — | 0 |
| AS31422GB | AONUK-AS AON UK LIMITED | — | — | 0 |
| AS43433GB | MICROFROST Christopher Frost | — | — | 0 |
| AS8897GB | KCOM-SPN KCOM Group Limited | — | — | 0 |
| AS8844GB | COMMUNITY GTT - EMEA Ltd. | — | — | 0 |
| AS5622GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS206918GB | DWP Department for Work and Pensions | — | — | 0 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |