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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.
3,134 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 | 368 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,229 |
| — |
| 1 |
| 1 |
| AS204291GB | pinguin Thomas McLoughlin | — | 337 | 7 |
| AS60899GB | ATECHMEDIA-AS Krystal Hosting Ltd | — | — | 0 |
| AS199129GB | DIRECTCONNECT-AS Direct Connect (ISP) Ltd | — | 1 | 1 |
| AS207965GB | ETIENNE-LABAUME ETIENNE LABAUME | — | 13 | 3 |
| AS58007GB | Witine Witine Limited | — | 1 | 1 |
| AS12554GB | EASYNET-BE GTT - EMEA Ltd. | — | — | 0 |
| AS200299GB | BASESERV-AS BaseServ Limited | — | 1 | 1 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS200707GB | APPMAIL Integrated Digital Services Ltd | — | 65.5K | 1 |
| AS211986GB | Athlok-BGP-Collector Athlok Ltd | — | — | 0 |
| AS200927GB | ProxyOmega ProxyOmega LTD | — | 65.5K | 1 |
| AS216126GB | James-Ledger James Ledger | — | 13 | 13 |
| AS208485GB | PINHOUSE-AS PINHOUSE LIMITED | — | 1 | 1 |
| AS208533GB | CSSUK Clear Street Services UK LTD | — | — | 0 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS218843GB | OMNIVISION-INTERNET-GATEWAY Omnivision Solutions Ltd | — | 338 | 8 |
| AS213982GB | DISTRICTB-AS Callum Bennett | — | 17 | 2 |
| AS219070GB | gbevm Eximia Networks Limited | — | 8 | 8 |
| AS214293GB | BudgetD BUDGET DOMAINS LTD | — | — | 0 |
| AS60945GB | VELOXSERV-LEGACY VeloxServ Communications Ltd | — | — | 0 |
| AS60677GB | DLG DL Insurance Services Limited | — | — | 0 |
| AS215619GB | RCD-AS RED COKE DEVELOPMENT LTD | — | 3 | 3 |
| AS48562GB | EQUINIX-CLOUD-EXCHANGE-DUBAI-ASN EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS43006GB | DIGITAL-REALTY-IE Digital Realty (UK) Limited | — | — | 0 |
| AS39530GB | parker James Parker | — | — | 0 |
| AS216157GB | SIXNET-OP Sixnet Operation Ltd | — | 65.5K | 1 |
| AS34407GB | WAVECREST-AS01 Wavecrest Networks Limited | — | — | 0 |
| AS211597GB | Litfibre Lit Fibre Group Ltd. | — | — | 0 |
| AS12708GB | OneTel-AS TalkTalk Communications Limited | — | — | 0 |
| AS61126GB | ROUTED Lee Valentine | — | 3 | 3 |
| AS219541GB | STAUS-AS STAUS LTD | — | — | 0 |
| AS218818GB | WBTECH WB TECH SYSTEMS LTD | — | — | 0 |
| AS50773GB | ASN-Anana16 Sabio Ltd. | — | — | 0 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS202194GB | HORDEN-ENGINEERING Horden Engineering Limited | — | 1 | 1 |
| AS215363GB | Wles Wles Technologies Ltd | — | 257 | 2 |
| AS209507GB | REALLY-AWESOME-TECHNOLOGY Really Awesome Technology LTD | — | 1 | 1 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 6 | 4 |
| AS218671GB | WALKOWSKI-AS Lukasz Walkowski | — | 1 | 1 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS218748GB | OSCAR-BRADLEY Oscar Lewis Bradley | — | 4.1K | 1 |
| AS57110GB | AARAN-CLOUD-AS Aaran Perry | — | 257 | 2 |
| AS198557GB | ONETTL George French | — | 1 | 1 |
| AS214242GB | Jx Jiaxing Xing | — | 519 | 9 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 69.2K | 19 |
| AS48987GB | JYANGNET Jiaxun Yang | — | 1 | 1 |