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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 |
| — |
| 9 |
| 9 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS202751GB | BGP_AS Christopher Edwards | — | 1 | 1 |
| AS198801GB | YOUR-HOUSING-GROUP-AS Your Housing Group Ltd | — | — | 0 |
| AS58285GB | ASSIXOP Sixnet Operation Ltd | — | 10.6M | 256 |
| AS198300GB | FES FES Ltd | — | — | 0 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS49819GB | SHOPZILLAEU Skimbit Ltd | — | — | 0 |
| AS59893GB | FRC-AS Free Range Cloud Ltd. | — | 4 | 4 |
| AS51287GB | CONSENSUSONE-NOC-AS BITNIFTY LTD | — | — | 0 |
| AS49134GB | AS_10VPN 10VPN Research Network LTD | — | 22 | 4 |
| AS214749GB | PAW James Cahill | — | 7 | 7 |
| AS50534GB | VMO2 Virgin Media Limited | — | — | 0 |
| AS204931GB | PNOSOLUTIONS-AS PNO Solutions Limited | — | 8 | 2 |
| AS42902GB | GLOBECONNECT Clouvider Limited | — | — | 0 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS209771GB | SYSN SYSN LTD | — | 1 | 1 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS218705GB | BGPEX Jeremy Gumbley | — | 1 | 1 |
| AS200499GB | EHL-AS Enterprises Holding LTD | — | 1 | 1 |
| AS34079GB | EDUSERV-AS Jisc Services Limited | — | — | 0 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS50173GB | VTESSE GTT - EMEA Ltd. | — | 2 | 2 |
| AS202235GB | CSD-COMMS UK On-line Agri-sales Limited | — | 65.5K | 1 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS215158GB | SIXNET-OP2 Sixnet Operation Ltd | — | 65.5K | 1 |
| AS13144GB | Vodafone-UK-AS Vodafone Limited | — | — | 0 |
| AS215363GB | Wles Wles Technologies Ltd | — | 257 | 2 |
| AS197166GB | GOTSCHNA-AS Gotschna Limited | — | 2 | 2 |
| AS200198GB | DSMTech DSM (GB) Limited | — | 16 | 1 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 29 | 14 |
| AS9105GB | TISCALI-UK TalkTalk Communications Limited | — | — | 0 |
| AS218776GB | FULLFIBER FULLFIBER LTD | — | 4 | 4 |
| AS212784GB | Marykirk-com Buchan Consultancy Services Ltd | — | — | 0 |
| AS215600GB | KTTCARRIER KTT Europe Limited | — | 65.5K | 1 |
| AS24670GB | COHTECH01-AS Coherent Technology Solutions Limited | — | — | 0 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 6 | 4 |
| AS15565GB | GTT - EMEA Ltd. | — | — | 0 |
| AS200104GB | crow PETALDATA LTD | — | 1 | 1 |
| AS212182GB | ASTARZATBEAMP INTER-ACT HOSTING SERVICES LTD | — | — | 0 |
| AS210387GB | GUARDY Guardy Limited | — | 4.1K | 1 |
| AS213989GB | DesignedBy-Scot Scott Luty | — | — | 0 |
| AS212121GB | VAGUE James Ray | — | 4 | 4 |
| AS199172GB | FAST-BITS-AS Fast Bits Limited | — | — | 0 |
| AS201616GB | theoh-as Theo Holroyd | — | 2 | 2 |
| AS211224GB | JB3 Joseph Banks | — | 17 | 2 |
| AS213729GB | RikkiNet Rikki Network Limited | — | 1 | 1 |