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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 |
| 1K |
| — |
| 3 |
| AS207511GB | LONDSTOCK-APAC London Stock Exchange PLC | 1K | — | 3 |
| AS204486GB | CHES-EAST Cheshire East Council | 1K | — | 1 |
| AS60193GB | wurzel Wurzel Ltd | 1K | 524.3K | 5 |
| AS214351GB | FEMOIT FEMO IT SOLUTIONS LIMITED | 1K | — | 5 |
| AS207310GB | cinos Cinos Communications Services Limited | 1.3K | — | 5 |
| AS28959GB | VITOL-AS Vitol Services Ltd | 1.3K | — | 5 |
| AS48704GB | AS-FRESHWAVE Freshwave Services Limited | 1.3K | 1M | 7 |
| AS214480GB | Innova-Communications Innova Communications Limited | 1.3K | 531 | 10 |
| AS204978GB | dmalagon LOBOS NETWORKING LTD | 1.3K | — | 2 |
| AS215674GB | BROOKPLUS-LIMITED Brookplus Limited | 1.3K | — | 5 |
| AS206223GB | Teledyne-UK Teledyne Limited | 1.3K | — | 2 |
| AS209318GB | NEBIC North East Business and Innovation Centre Limited | 1.3K | 589.8K | 4 |
| AS215759GB | Ziax Ziax Ltd | 1.3K | 2 | 7 |
| AS207765GB | Transit-Networks-Limited Transit Networks Limited | 1.3K | — | 5 |
| AS211058GB | threatspike-cloud-uk ThreatSpike Labs Limited | 1.3K | — | 5 |
| AS206733GB | BFC-HK Beeks Financial Cloud Ltd | 1.3K | — | 5 |
| AS41103GB | CLEARIP-AS teleBIZZ Ltd | 1.3K | 65.5K | 4 |
| AS48901GB | DSNET-CSP DSNET Ltd | 1.3K | 65.5K | 5 |
| AS206069GB | CORNSEED Cornseed Limited | 1.3K | 2 | 6 |
| AS198426GB | Voneus Voneus Ltd | 1.3K | — | 2 |
| AS47549GB | HOSTINGSYSTEMS-AS Hosting Systems Ltd | 1.3K | — | 5 |
| AS56540GB | CONSENSUSONE-AS BITNIFTY LTD | 1.3K | — | 4 |
| AS216180GB | WHG-AUS WHG Hosting Services Ltd | 1.3K | — | 5 |
| AS24633GB | XICON BCN Group Hosting Ltd | 1.3K | — | 2 |
| AS25588GB | SIXDEGREES-CLOUD-AS Six Degrees Technology Group Limited | 1.3K | — | 4 |
| AS39602GB | TCG-AS The Cent.re Group Limited | 1.3K | 524.3K | 5 |
| AS203258GB | UCNS-AS UCNS Limited | 1.3K | — | 5 |
| AS203354GB | VIEWSAT-AS Viewsat ltd. | 1.3K | — | 2 |
| AS197651GB | THEHUTGROUPLIMITED FIC SHARECO LIMITED | 1.3K | — | 2 |
| AS39633GB | PITCORE COMPUTER SYSTEMS INTEGRATION GROUP LIMITED | 1.3K | — | 5 |
| AS60962GB | BZ Foreign and Commonwealth Office | 1.3K | — | 3 |
| AS49657GB | TNSI Transaction Network Services (UK) LTD | 1.3K | — | 4 |
| AS210062GB | BARRITEL-LON-THN Barritel Ltd | 1.3K | 65.5K | 5 |
| AS200418GB | Uk-Dao Victor Connect Ltd. | 1.3K | — | 4 |
| AS199456GB | VLDTECH-ASN VALID TECHNOLOGY L.P. | 1.3K | 32.8K | 7 |
| AS213513GB | COMPUTLE Computle Limited | 1.3K | 524.3K | 6 |
| AS21346GB | VISTORM-AS Enterprise Services Information Security UK Limited | 1.3K | — | 5 |
| AS50807GB | INSPIRETEC-ASN Inspiretec LTD | 1.3K | — | 4 |
| AS57750GB | NDS-UK SYNAMEDIA LIMITED | 1.3K | 256 | 5 |
| AS216167GB | Gamma-GCE Gamma Telecom Holdings Ltd | 1.3K | — | 5 |
| AS49937GB | INTERACTIVESPORTS Interactive Sports Limited | 1.3K | — | 5 |
| AS59717GB | ARCO-AS Arco Limited | 1.3K | 524.3K | 3 |
| AS203851GB | as_csd001 CSD Network Services Ltd | 1.3K | — | 5 |
| AS197283GB | PowerRDP-Network-AS PowerRDP Network LTD | 1.3K | — | 5 |
| AS3232GB | ORG-ML847-RIPE ModernColo LP | 1.3K | — | 5 |
| AS47823GB | NHL-AS2 Netwise Hosting Ltd | 1.3K | — | 2 |