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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 |
| 1.3K |
| — |
| 5 |
| AS51031GB | StarNetwork w1n ltd | 1.3K | 258 | 7 |
| AS24633GB | XICON BCN Group Hosting Ltd | 1.3K | — | 2 |
| AS213737GB | DexDC AYOSOFT LTD | 1.3K | 2 | 7 |
| AS48704GB | AS-FRESHWAVE Freshwave Services Limited | 1.3K | 1M | 7 |
| AS213078GB | wifiscotland WiFi Scotland LLP | 1.3K | 524.3K | 3 |
| AS210310GB | PCT-Pure-IP Daisy Communications Ltd | 1.3K | — | 2 |
| AS59817GB | OXLETECH Oxletech Limited | 1.3K | 65.5K | 5 |
| AS211844GB | SWATER-ASN Southern Water Services Ltd | 1.3K | — | 5 |
| AS49415GB | VTSL-AS VTSL Ltd | 1.3K | — | 5 |
| AS25588GB | SIXDEGREES-CLOUD-AS Six Degrees Technology Group Limited | 1.3K | — | 4 |
| AS48444GB | INTER-NET-UK Internet Ltd | 1.3K | — | 5 |
| AS2129GB | HP-EUROPE-AS-TRADE EntServ UK Limited | 1.3K | — | 2 |
| AS28959GB | VITOL-AS Vitol Services Ltd | 1.3K | — | 5 |
| AS216180GB | WHG-AUS WHG Hosting Services Ltd | 1.3K | — | 5 |
| AS203851GB | as_csd001 CSD Network Services Ltd | 1.3K | — | 5 |
| AS210062GB | BARRITEL-LON-THN Barritel Ltd | 1.3K | 65.5K | 5 |
| AS24705GB | ECOM-SPARE Single Mode Networks Ltd | 1.3K | — | 2 |
| AS207765GB | Transit-Networks-Limited Transit Networks Limited | 1.3K | — | 5 |
| AS35180GB | HIPCOM-AS Broadsoft LTD | 1.3K | 2 | 7 |
| AS198895GB | ApexBroadband Techade Ltd | 1.3K | 524.3K | 6 |
| AS58349GB | INNETRA-AS Elna Paulette Valentin trading as INNETRA PC | 1.3K | — | 4 |
| AS44314GB | ITSYNERGY ITsynergy Limited | 1.3K | 65.5K | 3 |
| AS50807GB | INSPIRETEC-ASN Inspiretec LTD | 1.3K | — | 4 |
| AS39633GB | PITCORE COMPUTER SYSTEMS INTEGRATION GROUP LIMITED | 1.3K | — | 5 |
| AS215674GB | BROOKPLUS-LIMITED Brookplus Limited | 1.3K | — | 5 |
| AS59717GB | ARCO-AS Arco Limited | 1.3K | 524.3K | 3 |
| AS50510GB | CRUK-AS Cancer Research UK | 1.3K | — | 5 |
| AS59820GB | Astro Astro Communications LTD | 1.3K | — | 2 |
| AS209553GB | NETVAZ NETVAZ LIMITED | 1.3K | 4 | 9 |
| AS198362GB | nethuk2 NETH LTD | 1.3K | — | 5 |
| AS62417GB | DIGITALK_CLOUD_THW DIGITALK Limited | 1.3K | — | 5 |
| AS3232GB | ORG-ML847-RIPE ModernColo LP | 1.3K | — | 5 |
| AS199456GB | VLDTECH-ASN VALID TECHNOLOGY L.P. | 1.3K | 32.8K | 7 |
| AS203354GB | VIEWSAT-AS Viewsat ltd. | 1.3K | — | 2 |
| AS49657GB | TNSI Transaction Network Services (UK) LTD | 1.3K | — | 4 |
| AS208636GB | SDC SDC Hosting and Support Ltd | 1.3K | — | 5 |
| AS200418GB | Uk-Dao Victor Connect Ltd. | 1.3K | — | 4 |
| AS213513GB | COMPUTLE Computle Limited | 1.3K | 524.3K | 6 |
| AS210495GB | WENIUM WENIUM LTD | 1.3K | 16 | 6 |
| AS206232GB | AcuityUC Acuity Unified Communications Limited | 1.3K | — | 5 |
| AS39584GB | LGIM Legal & General Investment Management Holdings Ltd | 1.3K | — | 5 |
| AS206223GB | Teledyne-UK Teledyne Limited | 1.3K | — | 2 |
| AS47572GB | TICKETMASTER-EU2 Ticketmaster UK Limited | 1.3K | — | 5 |
| AS42909GB | COMMUNITYDNS Community DNS Limited | 1.3K | 3 | 8 |
| AS47823GB | NHL-AS2 Netwise Hosting Ltd | 1.3K | — | 2 |
| AS215047GB | Theonebroadband DSV Communications Limited | 1.5K | 524.3K | 6 |