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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.
3,123 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications PLC | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 170 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS212238GB | CDNEXT Datacamp Limited | 976.9K | 4,012 |
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| 0 |
| AS204000GB | YAHOO-LOB Yahoo-UK Limited | — | — | 0 |
| AS206986GB | GLOBALCDN Clouvider Limited | — | — | 0 |
| AS211708GB | Callum_Cardy Callum Cardy | — | — | 0 |
| AS212222GB | CentralNic-Anycast-I CentralNic Ltd | — | — | 0 |
| AS214240GB | SHDW Shadow Software Ltd | — | — | 0 |
| AS215397GB | JA-Software-Solutions-Limited JA Software Solutions Limited | — | — | 0 |
| AS20859GB | NOMURA-AS Nomura International Plc | — | — | 0 |
| AS43219GB | KRYSTAL Krystal Hosting Ltd | — | — | 0 |
| AS49856GB | EIGHT-AS 8X8 UK Limited | — | — | 0 |
| AS58120GB | FREEOLA Freeola Ltd | — | — | 0 |
| AS31665GB | INVESCO-AS Invesco UK Ltd | — | — | 0 |
| AS63053GB | IIX-AZIIX-RS - IX Reach Ltd | — | — | 0 |
| AS200917GB | LITEPLATE-AS LITEPLATE ENTERPRISE LIMITED | — | — | 0 |
| AS212511GB | VMNetworkConsultancy Vincent Martin | — | — | 0 |
| AS212867GB | SIPALTO Sipalto Ltd | — | — | 0 |
| AS215242GB | DATAPENTA DATAPENTA LIMITED | — | — | 0 |
| AS216437GB | BRILLBAND-AS Brillband Limited | — | — | 0 |
| AS35069GB | TIBRA-LD-AS Tibra Trading Europe Limited | — | — | 0 |
| AS43207GB | QUICKLINE Quickline Communications Limited | — | — | 0 |
| AS47693GB | LEGENDCOM Talk Straight Ltd. | — | — | 0 |
| AS57276GB | OPTIMITY Vorboss Limited | — | — | 0 |
| AS58338GB | PartNetGostar CALLWITHME LTD. | — | — | 0 |
| AS200769GB | SDCN1 BORDERS ONLINE LTD | — | — | 0 |
| AS48875GB | PANTOR-ENGINEERING-ASN Goldman Sachs International | — | — | 0 |
| AS205932GB | TerraNetUK TerraNet Ltd | — | — | 0 |
| AS208160GB | PINKCONNECT-AS Southern Communications Ltd | — | — | 0 |
| AS51212GB | TELECOMSBROKER-AS Telecomsbroker Ltd | — | — | 0 |
| AS207924GB | AS207924 WideFM Ltd | — | — | 0 |
| AS210440GB | Akaere-NetWork AKAERE NETWORKS TECHNOLOGY LTD | — | — | 0 |
| AS213190GB | STACLAR-CARRIER Staclar Carrier Ltd. | — | — | 0 |
| AS5604GB | FREEDOMTOSURF TalkTalk Communications Limited | — | — | 0 |
| AS6757GB | MULTIMSG VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS8898GB | WHAN High-Speed Universal Broadband Services C.I.C. | — | — | 0 |
| AS24976GB | Techgate-Communications Claranet Limited | — | — | 0 |
| AS39295GB | SWIP-AS Southern Communications Ltd | — | — | 0 |
| AS43620GB | Syan Digital Space Group Limited | — | — | 0 |
| AS42952GB | HSCNPEERING NHS England | — | — | 0 |
| AS38966GB | IntraLAN-AS IntraLAN Group Limited | — | — | 0 |
| AS202255GB | nian-network NIAN NETWORK LTD | — | — | 0 |
| AS204069GB | Gork-Group AG Host LTD | — | — | 0 |
| AS205182GB | LIFETIME-STUDIOS LIFETIME STUDIOS LTD | — | — | 0 |
| AS206745GB | Shawdex Shawdex Ltd | — | — | 0 |
| AS208309GB | scb-global SCB Global Ltd | — | — | 0 |
| AS212385GB | FreedomTECHAS FreedomTECH Solutions Ltd | — | — | 0 |
| AS213725GB | UK-03AI 03AI LTD | — | — | 0 |
| AS215587GB | STELIAIX Stelia Ltd | — | — | 0 |