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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
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.
3,123 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications PLC | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 100 |
| — |
| 6 |
| 6 |
| AS21493GB | PKXGEU GTT - EMEA Ltd. | — | — | 0 |
| AS213771GB | PLATANO-NETWORKS DCC TECH LTD | — | 12 | 3 |
| AS201164GB | Cool-Studio Cool Studio Limited | — | — | 0 |
| AS204345GB | STALLARD Timothy Stallard | — | 1 | 1 |
| AS200174GB | AS_WISPEED Wispeed LTD | — | — | 0 |
| AS213507GB | SKYQUANTUM-TELECOM SKYQUANTUM TELECOM LTD. | — | 753.7K | 23 |
| AS60899GB | ATECHMEDIA-AS Krystal Hosting Ltd | — | — | 0 |
| AS201567GB | Cinnabar Vivian Band | — | 1 | 1 |
| AS62273GB | IXMIDLANDS-ROUTESRV SRVNET LTD | — | — | 0 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 32 | 17 |
| AS47762GB | westcloud-AS CCPRO Solutions Limited | — | — | 0 |
| AS204931GB | PNOSOLUTIONS-AS PNO Solutions Limited | — | 8 | 2 |
| AS216324GB | HYPERGROUP-NET - Hyper Group Network Ltd. | — | 3 | 3 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 20 | 12 |
| AS204000GB | YAHOO-LOB Yahoo-UK Limited | — | — | 0 |
| AS199799GB | SOUNDMOUSE Soundmouse Ltd | — | — | 0 |
| AS25127GB | BTOW British Telecommunications PLC | — | — | 0 |
| AS31422GB | AONUK-AS AON UK LIMITED | — | — | 0 |
| AS15917GB | CSC-UK-MWH CSC Computer Sciences Ltd | — | — | 0 |
| AS214931GB | ALUE-NET ALUE NETWORK LIMITED | — | 1 | 1 |
| AS213308GB | CRISILUKIREVNA CRISIL Irevna UK Limited | — | — | 0 |
| AS5622GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS215754GB | FIBREWAVE-CUST Fiberwave Broadband Ltd | — | — | 0 |
| AS215113GB | VIHLTD VICTORIA INTERNATIONAL HOLDINGS LTD | — | — | 0 |
| AS213613GB | BotShield-LTD BOTSHIELD LTD | — | — | 0 |
| AS212992GB | blueprint_as Blueprint Gaming Ltd. | — | — | 0 |
| AS213385GB | Look_Web_Hosting_And_Web_Development LOOK WEB HOSTING AND WEB DEVELOPMENT LTD | — | — | 0 |
| AS206877GB | SharedGrid SharedGrid Ltd | — | 1 | 1 |
| AS59426GB | ISP-INTEXON-LTD INTEXON LTD | — | — | 0 |
| AS203056GB | TTBNGVS TalkTalk Communications Limited | — | — | 0 |
| AS133479GB | KEYLOOP-AS-AP - Keyloop (UK) Limited | — | — | 0 |
| AS216126GB | James-Ledger James Ledger | — | 13 | 13 |
| AS139853GB | NOMINET-AS-AP - NOMINET UK | — | — | 0 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 16 | 7 |
| AS61070GB | CDCW-PWC Pricewaterhousecoopers Services Limited | — | — | 0 |
| AS214514GB | HENRYCLARKE Henry Clarke | — | 16 | 1 |
| AS59811GB | Voneus Voneus Ltd | — | — | 0 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS60759GB | IAASRUN-EMEA-AS Netsapiens International Limited | — | — | 0 |
| AS207586GB | DOYLE-AS Doyle (North West) Ltd. | — | 16 | 1 |
| AS50697GB | ACSN-AS Reliance Cyber Ltd | — | — | 0 |
| AS216364GB | uk-globalreachtech Global Reach Technology EMEA Limited | — | 8.2K | 2 |
| AS47871GB | ASNMGL Newsquest Media Group Ltd | — | — | 0 |
| AS44754GB | SPACEMINE-AS SpaceMine Ltd | — | 1 | 1 |
| AS214665GB | PROJECT-PC Adam Beddall | — | — | 0 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 17 | 17 |