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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
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.
3,123 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications PLC | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 100 |
| 2.3K |
| — |
| 9 |
| AS212890GB | AetherCloud ONEMAN NETWORK LIMITED | 2.3K | 5 | 14 |
| AS198554GB | DXI-AS 8X8 UK Limited | 2.3K | — | 6 |
| AS60793GB | OCEAN-AS TELEFONICA TECH NORTHERN IRELAND LIMITED | 2.3K | 65.5K | 4 |
| AS60464GB | SUPERNET-UK SUPERNET UK LIMITED | 2.3K | — | 9 |
| AS199286GB | ANS-AS Abtec Network Systems LTD | 2.3K | — | 3 |
| AS60670GB | WideFM-LTD WideFM Ltd | 2.3K | 524.3K | 10 |
| AS201536GB | SANDYXHOSTING-AS SANDYX SYSTEMS LIMITED | 2.3K | 524.3K | 18 |
| AS8330GB | LONAP LONAP Ltd | 2.3K | 65.5K | 3 |
| AS203363GB | KUROIT Kuroit Limited | 2.3K | 2 | 11 |
| AS56444GB | THECLOUDLIMITED Atmoso Limited | 2.3K | — | 3 |
| AS50385GB | HALOCLOUD-NETWORK HaloCloud Network Limited | 2.3K | 2.4K | 17 |
| AS51159GB | THINKSYSTEMSUK-ASN CT1 Technologies Ltd | 2.3K | — | 5 |
| AS15768GB | ASWORLDPAY WorldPay (UK) Limited | 2.3K | — | 7 |
| AS50605GB | Radius Radius Communications Ltd | 2.3K | — | 9 |
| AS203919GB | LifeinCloud-AS LUMADOCK LTD | 2.3K | — | 9 |
| AS33970GB | M247 M247 Ltd | 2.3K | — | 6 |
| AS44891GB | AS24SEVEN-AS 24 Seven Communications Ltd | 2.3K | 65.5K | 10 |
| AS62246GB | WJY-AS WJY Limited | 2.3K | 1.3K | 11 |
| AS35327GB | NAGLOTECH Naglotech Limited | 2.3K | 1 | 6 |
| AS211552GB | CIVO-UK Civo LTD | 2.3K | 65.5K | 3 |
| AS203204GB | SERVICEDCLOUD Serviced Cloud Ltd | 2.3K | — | 3 |
| AS31151GB | PHG-AS PERFORMANCE HORIZON GROUP LIMITED | 2.3K | — | 9 |
| AS199186GB | daniel Daniel Thomas Atkinson | 2.3K | — | 9 |
| AS50152GB | IMED Intermedia Technologies Company Limited | 2.3K | — | 4 |
| AS212175GB | STELIA Stelia Ltd | 2.3K | 524.3K | 15 |
| AS34979GB | ThirtyNineNetworks 39D Services LTD | 2.3K | — | 5 |
| AS215638GB | AS-CILIX-LIMITED Cilix Limited | 2.3K | 458.8K | 15 |
| AS33921GB | Lebara-AS Lebara Ltd | 2.3K | 256 | 10 |
| AS209557GB | GEELINX-AS GEELINX LTD | 2.3K | 2 | 11 |
| AS201714GB | LinkIPNetworks Link IP Networks Ltd | 2.3K | — | 6 |
| AS203649GB | goInternet GO INTERNET LTD | 2.3K | 524.3K | 10 |
| AS216139GB | IRONHOST Iron Hosting Centre LTD | 2.3K | — | 9 |
| AS206352GB | MEDIACONNECTIVE Media Connective LLP | 2.3K | — | 5 |
| AS215429GB | Ireland IQVIA SOLUTIONS HQ LTD | 2.3K | — | 5 |
| AS60255GB | InternettyUK Internetty Ltd | 2.3K | 524.3K | 6 |
| AS201101GB | NATSEN-NC NATS (En Route) Ltd | 2.3K | — | 7 |
| AS47582GB | ansonnet-as-uk ANSON NETWORK LIMITED | 2.3K | — | 3 |
| AS48549GB | BRINGOGROUP Bringo Group Ltd | 2.3K | — | 6 |
| AS58188GB | SHARPSTREAM Sharpstream Ltd | 2.3K | 3 | 9 |
| AS212047GB | CIVO-USA Civo LTD | 2.3K | 65.5K | 3 |
| AS35299GB | ASC2k C2k | 2K | — | 1 |
| AS206547GB | CDK-Global-EU Keyloop Holdings (UK) Limited | 2K | — | 4 |
| AS47113GB | SLP Suffolk Life Pensions Limited | 2K | — | 1 |
| AS42775GB | DSRT-NET ADWORLDS TECHNOLOGIES LP | 2K | 1 | 4 |
| AS43534GB | CREDITCALL Network Merchants Limited | 2K | — | 5 |
| AS11856GB | XCONNECT-TECH - XC Technology Holdings LTD | 2K | — | 3 |