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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 |
| — |
| 1 |
| 1 |
| AS208886GB | RIPL-AS Rhodes Island Pharmaceutical Ltd | — | — | 0 |
| AS215022GB | FWLB-networks Jamie Hosker | — | 1 | 1 |
| AS210090GB | PIPER-AS Zack Piper | — | — | 0 |
| AS214931GB | ALUE-NET ALUE LTD | — | 1 | 1 |
| AS202937GB | uk-scripps Discovery Corporate Services Limited | — | — | 0 |
| AS201567GB | Cinnabar Vivian Band | — | 1 | 1 |
| AS204000GB | YAHOO-LOB Yahoo-UK Limited | — | — | 0 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS199210GB | EY-DE-NGDC-1 EY Global Services Limited | — | — | 0 |
| AS211131GB | as_globaltechinterapps LOBOS NETWORKING LTD | — | — | 0 |
| AS219361GB | SHIKANOKO-NETWORKS SHIKANOKO NETWORKS LTD | — | 1 | 1 |
| AS60160GB | Jefferies-AS Jefferies International Limited | — | — | 0 |
| AS52037GB | y-internet Blackbridge Limited | — | — | 0 |
| AS59529GB | CME-AS-LO2-1 CME Operations Limited | — | — | 0 |
| AS218849GB | kent Eximia Networks Limited | — | — | 0 |
| AS218703GB | Tempest TEMPEST OPERATIONS UK LTD | — | — | 0 |
| AS215661GB | ANIXNICS ANIXNICS LIMITED | — | — | 0 |
| AS219032GB | PapilioHost Papilio Host Ltd | — | — | 0 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS63041GB | IIX-SFIIX-RS - IX Reach Ltd | — | — | 0 |
| AS9248GB | NHL-AS2 Netwise Hosting Ltd | — | — | 0 |
| AS12870GB | AHSYS Arrowhead Systems Ltd | — | — | 0 |
| AS215913GB | NetLab Chun Ming Ou | — | — | 0 |
| AS215523GB | YAYZI-AS Yayzi Broadband Limited | — | — | 0 |
| AS208442GB | ITCOM UK Intis Telecom LTD | — | — | 0 |
| AS199875GB | EA-ES-MAD Electronic Arts Limited | — | — | 0 |
| AS198276GB | Lazuline Jordan Robert | — | 2 | 2 |
| AS44445GB | AS44445 AS44445 LTD | — | — | 0 |
| AS206229GB | NH-AS Neil Hammond | — | — | 0 |
| AS213085GB | LOGINELTDAS Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS61972GB | stixinternet STIX Internet Ltd | — | — | 0 |
| AS213982GB | DISTRICTB-AS Callum Bennett | — | 17 | 2 |
| AS218747GB | PRIMETECH PRIME TECH TECHNOLOGIES LTD | — | — | 0 |
| AS215527GB | XERONET Xero Networks LTD | — | 9 | 9 |
| AS215159GB | RokosServicesUK Rokos Services (UK) Limited | — | — | 0 |
| AS210516GB | KARMACOMPUTING Karma Computing Ltd | — | — | 0 |
| AS209536GB | Marex-SA-AS Spectron Services Limited | — | — | 0 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 16 | 1 |
| AS211149GB | legendfibre Talk Straight Ltd. | — | — | 0 |
| AS200104GB | crow PETALDATA LTD | — | 1 | 1 |
| AS60395GB | downshift Global Reach Networks Limited | — | — | 0 |
| AS50329GB | pbxhosting PBX Hosting Ltd | — | — | 0 |
| AS20517GB | ASN-TSC1 THE STREAMING COMPANY.COM LIMITED | — | — | 0 |
| AS21356GB | XchangePointMLP GTT - EMEA Ltd. | — | — | 0 |
| AS57604GB | VPLAB-NL VPLAB LTD | — | — | 0 |
| AS206918GB | DWP Department for Work and Pensions | — | — | 0 |