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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 |
| Clouvider-Anycast Clouvider Limited |
| — |
| — |
| 0 |
| AS50711GB | SYN-ANY SYN LTD | — | — | 0 |
| AS56726GB | fouron 4on LTD | — | — | 0 |
| AS199534GB | INTERFIBER-CI Interfiber Ltd | — | — | 0 |
| AS201327GB | H2NET ATN COMMUNICATIONS LIMITED | — | — | 0 |
| AS204000GB | YAHOO-LOB Yahoo-UK Limited | — | — | 0 |
| AS210377GB | sift-ltd Sift Ltd | — | — | 0 |
| AS218814GB | SONICSPEED SONIC SPEED FIBER INTERNET LIMITED | — | — | 0 |
| AS6727GB | EASYNET-FRANCE GTT - EMEA Ltd. | — | — | 0 |
| AS35069GB | TIBRA-LD-AS Tibra Trading Europe Limited | — | — | 0 |
| AS35528GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS47391GB | SYNWW SYN LTD | — | — | 0 |
| AS48875GB | PANTOR-ENGINEERING-ASN Goldman Sachs International | — | — | 0 |
| AS132006GB | DIOM-AS-AP - Domicilium (IOM) Ltd | — | — | 0 |
| AS198136GB | FIX-RS Alioth Systems Limited | — | — | 0 |
| AS204725GB | luna-frankland Luna Frankland | — | — | 0 |
| AS205517GB | HCBC-AS Highland Community Broadband C.I.C. | — | — | 0 |
| AS212867GB | SIPALTO Sipalto Ltd | — | — | 0 |
| AS211460GB | NOVATRIX-AS NOVATRIX LTD | — | — | 0 |
| AS203237GB | Vodafone-UK-Cloud-Connect Vodafone Limited | — | — | 0 |
| AS208098GB | GPS THREDD UK LIMITED | — | — | 0 |
| AS210551GB | WEALDEN Wealden District Council | — | — | 0 |
| AS203232GB | XENODE Xenode Ltd | — | — | 0 |
| AS216149GB | DomainR Domain Recovery Limited | — | — | 0 |
| AS12878GB | Colt-managed-DC-Cloud-Customers COLT Technology Services Group Limited | — | — | 0 |
| AS20842GB | FORMULAPLUS-AS IPTP LTD | — | — | 0 |
| AS57751GB | packets_global Andrews & Arnold Ltd | — | — | 0 |
| AS203036GB | GPS-2 THREDD UK LIMITED | — | — | 0 |
| AS34716GB | ANIX Timico Managed Services Limited | — | — | 0 |
| AS46257GB | ATEX-ASN - Atex | — | — | 0 |
| AS51782GB | VONEUS Voneus Ltd | — | — | 0 |
| AS200427GB | PROXIMITY-AS Proximity Data Centres Limited | — | — | 0 |
| AS200614GB | VRTS-GPK COHESITY INTERNATIONAL UK LIMITED | — | — | 0 |
| AS203910GB | JTC-NET Jenson Cornhill | — | — | 0 |
| AS203981GB | DIXIPAY-AS DIXIPAY LTD | — | — | 0 |
| AS206745GB | Shawdex Shawdex Ltd | — | — | 0 |
| AS206895GB | PRIMONET-RESEARCH-AS Ashley Primo | — | — | 0 |
| AS41614GB | TELEDESIGN-AS Teledesign Solutions Ltd | — | — | 0 |
| AS214005GB | MAINSTREAM-CIR-AS Mainstream Digital Ltd | — | — | 0 |
| AS216442GB | uk-ngaconnect NGA Connect Limited | — | — | 0 |
| AS218754GB | THORN-HOSTING Thorn Hosting LTD | — | — | 0 |
| AS24976GB | Techgate-Communications Claranet Limited | — | — | 0 |
| AS42330GB | UNCHAINEDISP Unchained ISP Limited | — | — | 0 |
| AS58120GB | FREEOLA FREEOLA LIMITED | — | — | 0 |
| AS59634GB | ZETTA Zetta Connect Ltd | — | — | 0 |
| AS63024GB | IIX-WAIIX-RS - IX Reach Ltd | — | — | 0 |
| AS202370GB | HSX-AZ Hiscox Underwriting Group Services Ltd | — | — | 0 |