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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 | 4,290 |
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| AS44360GB | IPASSETS Bink Group Ltd | — | — | 0 |
| AS55212GB | IIX-WVIIX-RS - IX Reach Ltd | — | — | 0 |
| AS20517GB | ASN-TSC1 THE STREAMING COMPANY.COM LIMITED | — | — | 0 |
| AS218770GB | MLFTECH MLF TECH SUPPORT LIMITED | — | — | 0 |
| AS202194GB | HORDEN-ENGINEERING Horden Engineering Limited | — | 1 | 1 |
| AS218671GB | WALKOWSKI-AS Lukasz Walkowski | — | 1 | 1 |
| AS214514GB | HENRYCLARKE Henry Clarke | — | 16 | 1 |
| AS213626GB | BIONIC-NETWORK Bionic.Network Ltd | — | 2 | 2 |
| AS202627GB | CARBONDNS Fika Studio Limited | — | 1 | 1 |
| AS200299GB | BASESERV-AS BaseServ Limited | — | 1 | 1 |
| AS216126GB | James-Ledger James Ledger | — | 13 | 13 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS209606GB | BEYONDORBIT Beyond Orbit Ltd. | — | 3 | 3 |
| AS219157GB | GCS Global Capital Services Ltd. | — | 1 | 1 |
| AS13218GB | INNOVISE-AS WorkWave UK LTD | — | — | 0 |
| AS215002GB | PRISMGG PRISM.GG Limited | — | 80 | 2 |
| AS216364GB | uk-globalreachtech Global Reach Technology EMEA Limited | — | 8.2K | 2 |
| AS219370GB | Johnson Benjamin Johnson | — | 22 | 7 |
| AS212806GB | stratagem VeloxServ Communications Ltd | — | 64 | 1 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS34202GB | CLOUVIDER-THN2 Clouvider Limited | — | 1 | 1 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 4 | 4 |
| AS213729GB | RikkiNet Rikki Network Limited | — | 1 | 1 |
| AS215415GB | YUWAN-NETWORKS YUWAN NETWORKS LIMITED | — | 6 | 6 |
| AS201316GB | AIGLOBALMEDIALTD A.I. Global Media Ltd | — | — | 0 |
| AS49503GB | IDE-GROUP-MANAGE MAINFRAME & CYBERNETIC SYSTEMS LIMITED | — | — | 0 |
| AS47999GB | TCL-AS Verint Systems UK Limited | — | — | 0 |
| AS43178GB | TECHNOLABS Technolabs Networks Ltd. | — | — | 0 |
| AS31402GB | BlueSquare Rank Digital Limited | — | — | 0 |
| AS24778GB | Datapipe-UK Rackspace Ltd. | — | — | 0 |
| AS16351GB | JUNO-AS George Vorres | — | — | 0 |
| AS29202GB | Empics PA Media Group Ltd | — | — | 0 |
| AS208886GB | RIPL-AS Rhodes Island Pharmaceutical Ltd | — | — | 0 |
| AS205750GB | Threadneedle_Asset_Management_Holdings_Ltd Threadneedle Asset Management Holdings Ltd | — | — | 0 |
| AS203945GB | ThomasFranklin-AS Thomas Franklin | — | — | 0 |
| AS204291GB | pinguin Thomas McLoughlin | — | 337 | 7 |
| AS199066GB | DATA8-AS Data8 Limited | — | — | 0 |
| AS63041GB | IIX-SFIIX-RS - IX Reach Ltd | — | — | 0 |
| AS62189GB | INNETRA-EU Elna Paulette Valentin trading as INNETRA PC | — | — | 0 |
| AS44332GB | ASN-CENTRILOGIC-UK Centrilogic Ltd | — | — | 0 |
| AS39530GB | parker James Parker | — | — | 0 |
| AS21321GB | NETUITY-AS BITNIFTY LTD | — | — | 0 |
| AS211597GB | Litfibre Lit Fibre Group Ltd. | — | — | 0 |
| AS219387GB | ASANTI Asanti Datacentres Limited | — | — | 0 |
| AS214293GB | BudgetD BUDGET DOMAINS LTD | — | — | 0 |