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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 |
| 2.6K |
| 9.2K |
| 17 |
| AS43355GB | GATWICK-AIRPORT GATWICK AIRPORT LIMITED | 2.6K | 589.8K | 8 |
| AS47716GB | ISIX-CLOUD-AS ISIX Communications LLP | 2.6K | 524.3K | 5 |
| AS208621GB | logicforge LogicForge Limited | 2.6K | 73.7K | 19 |
| AS203421GB | BALTICBROADBAND-AS Baltic Broadband Limited | 2.6K | — | 4 |
| AS203067GB | Giacom GIACOM (CLOUD) LIMITED | 2.6K | — | 9 |
| AS24949GB | BTCML-AXA-AS AXA Technology Services UK Limited | 2.6K | — | 6 |
| AS205654GB | ASN-LABTECH Labtech Systems Ltd | 2.6K | — | 8 |
| AS62172GB | AIRBYTES AIRBYTES COMMUNICATIONS Limited | 2.6K | 262.1K | 14 |
| AS60670GB | WideFM-LTD WideFM Ltd | 2.3K | 524.3K | 10 |
| AS203235GB | ZANANET zananet Limited | 2.3K | 524.3K | 4 |
| AS199286GB | ANS-AS Abtec Network Systems LTD | 2.3K | — | 3 |
| AS201536GB | SANDYXHOSTING-AS SANDYX SYSTEMS LIMITED | 2.3K | 524.3K | 18 |
| AS204154GB | FIRST-SERVER-US-AS FIRST SERVER LIMITED | 2.3K | 3 | 10 |
| AS51159GB | THINKSYSTEMSUK-ASN CT1 Technologies Ltd | 2.3K | — | 5 |
| AS50605GB | Radius Radius Communications Ltd | 2.3K | — | 9 |
| AS56444GB | THECLOUDLIMITED Atmoso Limited | 2.3K | — | 3 |
| AS21130GB | IOMART-IE IOMART CLOUD SERVICES LIMITED | 2.3K | 1 | 7 |
| AS201714GB | LinkIPNetworks Link IP Networks Ltd | 2.3K | — | 6 |
| AS15768GB | ASWORLDPAY WorldPay (UK) Limited | 2.3K | — | 7 |
| AS202831GB | ABLAYKHANSHAN Packet Loss LTD | 2.3K | 263 | 272 |
| AS33970GB | M247 M247 Ltd | 2.3K | — | 6 |
| AS211552GB | CIVO-UK Civo LTD | 2.3K | 65.5K | 3 |
| AS203363GB | KUROIT Kuroit Limited | 2.3K | 2 | 11 |
| AS205771GB | OCTAPLUSUK OCTAPLUS NETWORKS LTD | 2.3K | 196.6K | 9 |
| AS203649GB | goInternet GO INTERNET LTD | 2.3K | 524.3K | 10 |
| AS58188GB | SHARPSTREAM Sharpstream Ltd | 2.3K | 4 | 10 |
| AS50385GB | HALOCLOUD-NETWORK HaloCloud Network Limited | 2.3K | 2.4K | 17 |
| AS60793GB | OCEAN-AS TELEFONICA TECH NORTHERN IRELAND LIMITED | 2.3K | 65.5K | 4 |
| AS212047GB | CIVO-USA Civo LTD | 2.3K | 65.5K | 3 |
| AS47582GB | ansonnet-as-uk ANSON NETWORK LIMITED | 2.3K | — | 3 |
| AS31151GB | PHG-AS PERFORMANCE HORIZON GROUP LIMITED | 2.3K | — | 9 |
| AS214467GB | digided-as DIGIDED LTD | 2.3K | — | 9 |
| AS206352GB | MEDIACONNECTIVE Media Connective LLP | 2.3K | — | 5 |
| AS203204GB | SERVICEDCLOUD Serviced Cloud Ltd | 2.3K | — | 3 |
| AS201101GB | NATSEN-NC NATS (En Route) Ltd | 2.3K | — | 7 |
| AS60255GB | InternettyUK Internetty Ltd | 2.3K | 524.3K | 6 |
| AS34654GB | IONIC-AS Merula Limited | 2.3K | — | 2 |
| AS44891GB | AS24SEVEN-AS 24 Seven Communications Ltd | 2.3K | 65.5K | 10 |
| AS212175GB | STELIA Stelia Ltd | 2.3K | 524.3K | 15 |
| AS50152GB | IMED Intermedia Technologies Company Limited | 2.3K | — | 4 |
| AS8330GB | LONAP LONAP Ltd | 2.3K | 65.5K | 3 |
| AS48549GB | BRINGOGROUP Bringo Group Ltd | 2.3K | — | 6 |
| AS219250GB | CIVO-LON2 Civo LTD | 2.3K | — | 2 |
| AS35327GB | NAGLOTECH Naglotech Limited | 2.3K | 1 | 6 |
| AS51439GB | AIG-EUROPE-SERVICES-LTD AIG Europe (Services) Limited | 2K | 3 | 7 |
| AS56718GB | INTOUCH-BROADBAND Redshelf Ltd | 2K | 197.1K | 12 |