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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.
3,143 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 172 |
| AS212238GB | CDNEXT Datacamp Limited | 1.2M | 4,613 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 404 |
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| 0 |
| AS215415GB | YUWAN-NETWORKS YUWAN NETWORKS LIMITED | — | 6 | 6 |
| AS211966GB | BEN-HOUGHTON Ben Houghton | — | — | 0 |
| AS132006GB | DIOM-AS-AP - Domicilium (IOM) Ltd | — | — | 0 |
| AS62980GB | IIX-SJIIX-RS - IX Reach Ltd | — | — | 0 |
| AS52167GB | BANDWIDTH-USA Hydra Communications Ltd | — | — | 0 |
| AS206925GB | CentralNic-GRX-A CentralNic Ltd | — | — | 0 |
| AS201327GB | H2NET ATN COMMUNICATIONS LIMITED | — | — | 0 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS206918GB | DWP Department for Work and Pensions | — | — | 0 |
| AS212902GB | KKL Kustom Konsulting Limited | — | — | 0 |
| AS212263GB | AS-ROCKETFIBRE Rocket Fibre Ltd | — | — | 0 |
| AS210727GB | BuyLtd Buy Limited | — | — | 0 |
| AS213289GB | iqvia Redcentric Solutions Ltd | — | — | 0 |
| AS200927GB | ProxyOmega ProxyOmega LTD | — | 65.5K | 1 |
| AS202487GB | HPN HP Networks Ltd | — | — | 0 |
| AS207427GB | IBILLY-MEDIA-GROUP-LTD IBILLY MEDIA GROUP LTD | — | — | 0 |
| AS209869GB | OLLIES_CLOUD Ollie's Cloud LTD | — | — | 0 |
| AS24669GB | CLOUVIDER-NETWORK-OPTIMISATION Clouvider Limited | — | — | 0 |
| AS20629GB | UK-BIS Six Degrees Technology Group Limited | — | — | 0 |
| AS9191GB | NEWNET Digital Space Group Limited | — | — | 0 |
| AS204000GB | YAHOO-LOB Yahoo-UK Limited | — | — | 0 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS13217GB | Vodafone Enterprise Equipment Limited | — | — | 0 |
| AS2855GB | Business-Fabric British Telecommunications Limited | — | — | 0 |
| AS9156GB | BBC-TRANSIT BBC | — | — | 0 |
| AS199748GB | CCN-UK Voneus Ltd | — | — | 0 |
| AS61070GB | CDCW-PWC Pricewaterhousecoopers Services Limited | — | — | 0 |
| AS5571GB | NETCOM GTT - EMEA Ltd. | — | — | 0 |
| AS48562GB | EQUINIX-CLOUD-EXCHANGE-DUBAI-ASN EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS199799GB | SOUNDMOUSE Soundmouse Ltd | — | — | 0 |
| AS47947GB | WEHANDS-AS 3nt solutions LLP | — | — | 0 |
| AS199228GB | IHOR-AS IHOR HOSTING LTD | — | — | 0 |
| AS59426GB | ISP-INTEXON-LTD INTEXON LTD | — | — | 0 |
| AS58223GB | JT_Global_Enterprise Sabio Ltd. | — | — | 0 |
| AS199853GB | HOSTIQOR-AS Hostiqor Limited | — | — | 0 |
| AS42192GB | India THUNDER NETWORK LIMITED | — | 1 | 1 |
| AS199686GB | aaroncarson Aaron Carson | — | 18 | 3 |
| AS50461GB | CITYTELECOM City Telecom LTD | — | — | 0 |
| AS47718GB | IMSHealth IQVIA SOLUTIONS HQ LTD | — | — | 0 |
| AS49396GB | LLWYNYGORRAS Llwynygorras Cyf | — | — | 0 |
| AS50445GB | WIREFAST Wirefast Limited | — | — | 0 |
| AS218639GB | CogniTransit CogniCloud Ltd | — | — | 0 |
| AS216116GB | vivoenergy-as Vivo Energy Ltd | — | — | 0 |
| AS202867GB | Sugarnet Voneus Ltd | — | — | 0 |
| AS213626GB | BIONIC-NETWORK Bionic.Network Ltd | — | 2 | 2 |