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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 |
| 1.3K |
| — |
| 2 |
| AS200418GB | Uk-Dao Victor Connect Ltd. | 1.3K | — | 4 |
| AS35180GB | HIPCOM-AS Broadsoft LTD | 1.3K | 2 | 7 |
| AS197283GB | PowerRDP-Network-AS PowerRDP Network LTD | 1.3K | — | 5 |
| AS198426GB | Voneus Voneus Ltd | 1.3K | — | 2 |
| AS47572GB | TICKETMASTER-EU2 Ticketmaster UK Limited | 1.3K | — | 5 |
| AS59817GB | OXLETECH Oxletech Limited | 1.3K | 65.5K | 5 |
| AS50807GB | INSPIRETEC-ASN Inspiretec LTD | 1.3K | — | 4 |
| AS204103GB | commswest Comms West Limited | 1.3K | — | 5 |
| AS205996GB | Interfiber Interfiber Ltd | 1.3K | 65.5K | 3 |
| AS211126GB | WHG-MEX WHG Hosting Services Ltd | 1.3K | — | 5 |
| AS206490GB | SOUTHENDBC-AS Southend-on-Sea City Council | 1.3K | — | 2 |
| AS213513GB | COMPUTLE Computle Limited | 1.3K | 524.3K | 6 |
| AS28959GB | VITOL-AS Vitol Services Ltd | 1.3K | — | 5 |
| AS204670GB | NTT NTT United Kingdom Ltd | 1.3K | — | 5 |
| AS41103GB | CLEARIP-AS teleBIZZ Ltd | 1.3K | 65.5K | 4 |
| AS48704GB | AS-FRESHWAVE Freshwave Services Limited | 1.3K | 1M | 7 |
| AS47318GB | WMAS West Midlands Ambulance Service NHS Foundation Trust | 1.3K | — | 4 |
| AS58349GB | INNETRA-AS Elna Paulette Valentin trading as INNETRA PC | 1.3K | — | 4 |
| AS39633GB | PITCORE COMPUTER SYSTEMS INTEGRATION GROUP LIMITED | 1.3K | — | 5 |
| AS31050GB | FRAMESTORE The Framestore Limited | 1.3K | — | 5 |
| AS209318GB | NEBIC North East Business and Innovation Centre Limited | 1.3K | 589.8K | 4 |
| AS207765GB | Transit-Networks-Limited Transit Networks Limited | 1.3K | — | 5 |
| AS210310GB | PCT-Pure-IP Daisy Communications Ltd | 1.3K | — | 2 |
| AS9179GB | OFFICENET OfficeNet Systems Limited | 1.3K | — | 2 |
| AS214351GB | FEMOIT FEMO IT SOLUTIONS LIMITED | 1K | — | 5 |
| AS39414GB | BYTEFETCH ByteFetch Ltd | 1K | — | 1 |
| AS50489GB | ORIEDGE Radiant Infrastructure 1 Limited | 1K | — | 4 |
| AS43442GB | PROVU ProVu Communications Ltd | 1K | 1 | 2 |
| AS204236GB | uk-div011 Daniel Ionita | 1K | — | 1 |
| AS50882GB | MAXNETT Maxnett Ltd. | 1K | — | 1 |
| AS201289GB | ESENDEX COMMIFY UK LIMITED | 1K | — | 1 |
| AS206246GB | Formosa FORMOSA CAPITAL LP | 1K | 131.1K | 6 |
| AS209899GB | NUBIS zananet Limited | 1K | — | 1 |
| AS204486GB | CHES-EAST Cheshire East Council | 1K | — | 1 |
| AS202212GB | DWEBS-AS DWebs Ltd | 1K | 65.5K | 2 |
| AS199946GB | Ctalk Ctalk Limited | 1K | — | 4 |
| AS211912GB | WHG-USE2 WHG Hosting Services Ltd | 1K | — | 4 |
| AS44052GB | PRESSCOMPUTER-ASN ICONIC MEDIA SYSTEMS LIMITED | 1K | — | 3 |
| AS201024GB | DATAWEBGLOBAL-AS DATAWEB GLOBAL LP. | 1K | — | 2 |
| AS197234GB | stylez STYLEZ AI LTD | 1K | — | 4 |
| AS59439GB | VOICEFACTORY-AS EvolveIP LTD | 1K | 0 | 2 |
| AS209113GB | PRECEDENCE Precedence Technologies Ltd | 1K | — | 3 |
| AS56670GB | WSCC-AS West Sussex County Council | 1K | — | 2 |
| AS208765GB | Bulletproof Bullet Proof VPN Ltd | 1K | 524.3K | 5 |
| AS213451GB | CILIXNET-AS Cilix Limited | 1K | 65.5K | 5 |
| AS206984GB | lypy Lypy Limited | 1K | 524.3K | 3 |