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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.
3,143 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 172 |
| AS212238GB | CDNEXT Datacamp Limited | 1.2M | 4,613 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 404 |
| — |
| 1 |
| 1 |
| AS197040GB | DATAART-BEG DataArt Technologies UK Ltd | — | — | 0 |
| AS199519GB | THATGUYJACK-NET Jack Brierley | — | 9 | 9 |
| AS218254GB | COLLINGWOOD-AS THOMAS COLLINGWOOD ADVISORY LTD | — | — | 0 |
| AS214592GB | GLADELIGHT Gladelight Limited | — | 17 | 2 |
| AS215388GB | Clevotec Clevotec Limited | — | — | 0 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 16 | 1 |
| AS200639GB | Cross-Computing-Services Cross Computing Services Limited | — | — | 0 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS206976GB | KADFIRE Kadfire Limited | — | — | 0 |
| AS200493GB | WHITEQUARK-AS Ekaterina Zotova | — | 1 | 1 |
| AS198653GB | SOLARAPPS-AS SOLARAPPS LTD | — | — | 0 |
| AS207965GB | ETIENNE-LABAUME ETIENNE LABAUME | — | 13 | 3 |
| AS215002GB | PRISMGG PRISM.GG Limited | — | 80 | 2 |
| AS148971GB | KEIBIIN-AS-AP - Keibiin's Holdings Limited | — | 313 | 13 |
| AS13217GB | Vodafone Enterprise Equipment Limited | — | — | 0 |
| AS9786GB | XIANDOUCLOUD1-AS-AP - XIANDOUCLOUD INFORMATION TECHNOLOGY LTD | — | 1 | 1 |
| AS199035GB | Olcus-Limited Olcus Limited | — | — | 0 |
| AS199423GB | nexttranslate-as NEXTTRANSLATE LTD | — | — | 0 |
| AS139853GB | NOMINET-AS-AP - NOMINET UK | — | — | 0 |
| AS219018GB | gb-ducky Droidhub LTD | — | 1 | 1 |
| AS16755GB | The-London-Metal-Exchange The London Metal Exchange | — | — | 0 |
| AS49374GB | BFD-IX Konstantin Verba | — | — | 0 |
| AS31422GB | AONUK-AS AON UK LIMITED | — | — | 0 |
| AS29297GB | linkconnect-as Southern Communications Ltd | — | — | 0 |
| AS401583GB | COMBEST - Combest Peak Properties, LLC | — | — | 0 |
| AS59566GB | LogicForge LogicForge Limited | — | 8.2K | 1 |
| AS43313GB | FLT ITS Technology Group Limited | — | — | 0 |
| AS205058GB | MAEEKO MAGICAL NETWORK LIMITED | — | 5 | 4 |
| AS213756GB | MACARNE Macarne Limited | — | — | 0 |
| AS201567GB | Cinnabar Vivian Band | — | 1 | 1 |
| AS21345GB | SYMANTEC-EU CA Technology R&D Limited | — | — | 0 |
| AS204994GB | BAHAMUT-ZONE Luke Seabrook | — | 1 | 1 |
| AS218319GB | ZETCH-MNT Zetch Ltd | — | — | 0 |
| AS207529GB | NyanLoliNetwork NYANLOLI LTD | — | 571 | 12 |
| AS218230GB | AIDC-AS AI DATACENTER LIMITED | — | — | 0 |
| AS219494GB | HACKWORTH_UK_2 Hackworth Ltd | — | 2 | 2 |
| AS204047GB | BT-PSN-DNSP-AS British Telecommunications Limited | — | — | 0 |
| AS198768GB | OASISINFO-AS OASIS INFOTECH LIMITED | — | 2 | 2 |
| AS206269GB | Vantage-GB John Hillman | — | — | 0 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS206097GB | gameshield GAMESHIELD LIMITED | — | — | 0 |
| AS216364GB | uk-globalreachtech Global Reach Technology EMEA Limited | — | 8.2K | 2 |
| AS210961GB | SIGN4 Nathan York | — | 1 | 1 |
| AS200365GB | Possibly-Lizards Possibly Lizards Limited | — | 257 | 2 |
| AS31532GB | SKYBET-AS Hestview Limited | — | — | 0 |
| AS213026GB | GWILKINSON George Wilkinson | — | 1 | 1 |