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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 |
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| AS216055GB | blue Wren Olivia Wood | — | 1 | 1 |
| AS219456GB | TALANA-VLV Talana Labs Ltd | — | — | 0 |
| AS48961GB | WarwickNet Glide Student & Residential Limited | — | 65.5K | 1 |
| AS200994GB | CLUB-AS-001 BNW TECHNOLOGY LTD | — | — | 0 |
| AS44754GB | SPACEMINE-AS SpaceMine Ltd | — | 1 | 1 |
| AS202459GB | CUSHWAKE-UK Cushman & Wakefield Debenham Tie Leung Limited | — | — | 0 |
| AS208051GB | SR2COM SR2 Communications Limited | — | 32 | 2 |
| AS203850GB | Arkessa Arkessa Limited | — | — | 0 |
| AS204946GB | GUFFNET ABSOLUTE GUFF LTD | — | 1 | 1 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS219070GB | gbevm Eximia Networks Limited | — | 8 | 8 |
| AS42412GB | JSEU Jane Street Europe Ltd | — | — | 0 |
| AS214602GB | DATACENTER-CLUSTER-FL-AS FIRST SERVER LIMITED | — | 65.5K | 1 |
| AS62016GB | PSN Virgin Media Limited | — | — | 0 |
| AS56367GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS50617GB | H3GUK Hutchison 3G UK Limited | — | — | 0 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS49819GB | SHOPZILLAEU Skimbit Ltd | — | — | 0 |
| AS213767GB | RH Richard Humphries | — | 1 | 1 |
| AS218815GB | PKTECHGURUS PK TECH GURUS LTD | — | — | 0 |
| AS218758GB | CATBOY Lewis Brown | — | 17 | 2 |
| AS215415GB | YUWAN-NETWORKS YUWAN NETWORKS LIMITED | — | 6 | 6 |
| AS204446GB | HELLOMOUSE Hellomouse Ltd | — | 6 | 6 |
| AS199853GB | HOSTIQOR-AS Hostiqor Limited | — | — | 0 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 29 | 14 |
| AS59529GB | CME-AS-LO2-1 CME Operations Limited | — | — | 0 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS215158GB | SIXNET-OP2 Sixnet Operation Ltd | — | 65.5K | 1 |
| AS203766GB | AWILLS Andrew Wills | — | 1 | 1 |
| AS41393GB | NASSTAR-AS GCI Network Solutions Limited | — | — | 0 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS44366GB | DATACASH-AS MASTERCARD PAYMENT GATEWAY SERVICES GROUP LIMITED | — | — | 0 |
| AS198276GB | Lazuline Jordan Robert | — | 2 | 2 |
| AS12640GB | COLT Technology Services Group Limited | — | — | 0 |
| AS219370GB | Johnson Benjamin Johnson | — | 22 | 7 |
| AS44218GB | CTBY-ASN China Telecom Europe Ltd. | — | — | 0 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS15635GB | YAHOO-UKL Yahoo-UK Limited | — | — | 0 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 69.2K | 19 |
| AS25041GB | AWS-DX British Telecommunications Limited | — | — | 0 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS2529GB | DEMON-INTERNET - IDDQD-AS | — | — | 0 |
| AS210985GB | BISHOP Christopher Bishop | — | 2 | 2 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS215527GB | XERONET Xero Networks LTD | — | 9 | 9 |
| AS61341GB | NASSTAR-MPLS-AS GCI Network Solutions Limited | — | — | 0 |