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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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| 0 |
| AS209536GB | Marex-SA-AS Spectron Services Limited | — | — | 0 |
| AS7042GB | UK-ALPHA GamerDating Ltd | — | — | 0 |
| AS218894GB | HORNBEAM HORNBEAM TECH SERVICES LTD | — | — | 0 |
| AS216217GB | baltic Baltic Networks Limited | — | — | 0 |
| AS215413GB | PebbleHost-Protected PebbleHost Ltd | — | — | 0 |
| AS211893GB | CTUK-AS CITY TELECOM LTD | — | — | 0 |
| AS210453GB | VLXTEST VeloxServ Communications Ltd | — | — | 0 |
| AS209609GB | The-Cent-re-Group-Limited The Cent.re Group Limited | — | — | 0 |
| AS205374GB | NEXUSHOST NexusHost LTD | — | — | 0 |
| AS210187GB | KEVINRICHARDSON-AS Kevin Richardson | — | — | 0 |
| AS17102GB | IIX-LABS - IX Reach Ltd | — | — | 0 |
| AS216254GB | GAZLEE Gary Lee | — | — | 0 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |
| AS215909GB | AS-EDGENIX Edgenix LTD | — | — | 0 |
| AS213803GB | AS-Xray Xray Network Ltd | — | — | 0 |
| AS212902GB | KKL Kustom Konsulting Limited | — | — | 0 |
| AS212263GB | AS-ROCKETFIBRE Rocket Fibre Ltd | — | — | 0 |
| AS213786GB | idash IDASH SOLUTIONS LIMITED | — | — | 0 |
| AS211108GB | RGA RGA UK SERVICES LIMITED | — | — | 0 |
| AS20629GB | UK-BIS Six Degrees Technology Group Limited | — | — | 0 |
| AS208051GB | SR2COM SR2 Communications Limited | — | 32 | 2 |
| AS208174GB | CAMLIN-AS CAMLIN TECHNOLOGIES LIMITED | — | — | 0 |
| AS60395GB | downshift Global Reach Networks Limited | — | — | 0 |
| AS199227GB | Protocol7-IX JIANYUELAB LTD | — | — | 0 |
| AS213434GB | GALACTIX Rhys Woolcott | — | 17 | 2 |
| AS59608GB | SBPL Sona Business Pvt. Ltd. | — | — | 0 |
| AS57155GB | COAST805-AS Contingency Networks Ltd | — | — | 0 |
| AS49615GB | Ardmore-Construction-Limited Ardmore Construction Limited | — | — | 0 |
| AS199748GB | CCN-UK Voneus Ltd | — | — | 0 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS209364GB | OME-LOGIC-AS Ome Logic Ltd | — | — | 0 |
| AS211787GB | Rolosoft-Ltd Rolosoft Limited | — | — | 0 |
| AS209230GB | SERVERNET-ASv SERVERNET INTERNET LIMITED | — | — | 0 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS207427GB | IBILLY-MEDIA-GROUP-LTD IBILLY MEDIA GROUP LTD | — | — | 0 |
| AS43565GB | JumboIX IPTP LTD | — | — | 0 |
| AS202415GB | IDSI-2 Integrated Digital Services Ltd | — | — | 0 |
| AS211966GB | BEN-HOUGHTON Ben Houghton | — | — | 0 |
| AS132865GB | CMSL-AS-AP - Connect Managed Services (UK) Limited | — | — | 0 |
| AS60477GB | SIXDG-INSITE Six Degrees Technology Group Limited | — | — | 0 |
| AS50773GB | ASN-Anana16 Sabio Ltd. | — | — | 0 |
| AS200493GB | WHITEQUARK-AS Ekaterina Zotova | — | 1 | 1 |
| AS38237GB | LOADEDGE LoadEdge Limited | — | — | 0 |
| AS35662GB | IOMARTHOSTING Iomart Managed Services Limited | — | — | 0 |
| AS28705GB | CYBASE-AS Cybase Limited | — | — | 0 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |