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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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| AS34890GB | ASOS-AS ASOS.COM Limited | — | — | 0 |
| AS202631GB | LINX-GVPP London Internet Exchange Ltd. | — | — | 0 |
| AS208533GB | CSSUK Clear Street Services UK LTD | — | — | 0 |
| AS212385GB | FreedomTECHAS FreedomTECH Solutions Ltd | — | — | 0 |
| AS200469GB | FEMSTIOSROX-AS FEMSTIOSROX LTD | — | — | 0 |
| AS64474GB | ASN-IITSS IT Support Services Team Limited | — | — | 0 |
| AS201729GB | VALE-AS VALERUS LTD | — | — | 0 |
| AS199172GB | FAST-BITS-AS Fast Bits Limited | — | — | 0 |
| AS198740GB | AS_SPEEDYBITS Speedy Bits LTD | — | — | 0 |
| AS43620GB | Syan Digital Space Group Limited | — | — | 0 |
| AS198299GB | Kooljett-AS Kooljett Limited | — | — | 0 |
| AS60714GB | TELNA-UK TELNA (UK) LTD | — | — | 0 |
| AS34041GB | BMA-ORG-UK British Medical Association | — | — | 0 |
| AS13017GB | CABLE-AND-WIRELESS VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS198064GB | ZEROPACKETS-LTD ZEROPACKETS LTD | — | — | 0 |
| AS36287GB | IIX-BNIIX-RS - IX Reach Ltd | — | — | 0 |
| AS8802GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS214818GB | WILL-WILSON William Wilson | — | — | 0 |
| AS213608GB | CONNECTOM CONNECTOM LTD | — | — | 0 |
| AS212180GB | ERL-HSCN Everlight Radiology Limited | — | — | 0 |
| AS15845GB | CitC_IRS_Service_AS15845 Computers in the City Ltd | — | — | 0 |
| AS216126GB | James-Ledger James Ledger | — | 13 | 13 |
| AS201762GB | RBK-AS Royal Borough of Kingston Council | — | — | 0 |
| AS207268GB | STREXP STRATEGIC EXPLORATIONS LTD | — | 24 | 6 |
| AS201258GB | CRYPTIDZ Chaos Cupit | — | — | 0 |
| AS199398GB | LDNFLATS-AS LDNFLATS LTD | — | — | 0 |
| AS198653GB | SOLARAPPS-AS SOLARAPPS LTD | — | — | 0 |
| AS61135GB | TR-SUNUCUCOM TIGOVA NETWORK LIMITED | — | — | 0 |
| AS197976GB | FAVBET-AS Favbet Invest LLP | — | — | 0 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS213863GB | SmartIXPRouteServers SMARTNET LIMITED | — | — | 0 |
| AS219311GB | wavemobile Wave Mobile Ltd | — | — | 0 |
| AS39179GB | NASSTAR-TRANSIT-AS GCI Network Solutions Limited | — | — | 0 |
| AS29131GB | RAPIDSWITCH-AS IOMART CLOUD SERVICES LIMITED | — | — | 0 |
| AS202370GB | HSX-AZ Hiscox Underwriting Group Services Ltd | — | — | 0 |
| AS199916GB | DLG-HUB DL Insurance Services Limited | — | — | 0 |
| AS51170GB | Natterbox-net Red Matter Limited | — | — | 0 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS213660GB | elisamurphy Elisa Murphy | — | — | 0 |
| AS58120GB | FREEOLA FREEOLA LIMITED | — | — | 0 |
| AS60180GB | NEW VPLAB LTD | — | — | 0 |
| AS51391GB | Tommy-Bowditch Tommy Bowditch | — | — | 0 |
| AS50799GB | REED-BUSINESS LNRS Data Services Limited | — | — | 0 |
| AS43539GB | DRBSY Roebuck Group Limited | — | — | 0 |
| AS212479GB | RaziNetwork RAZINETWORK LTD | — | — | 0 |
| AS198741GB | AMELIAK Amelia Kalinowska | — | 1 | 1 |