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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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| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS215471GB | INTERNETTYUK-MDU Internetty Ltd | — | — | 0 |
| AS205058GB | MAEEKO MAGICAL NETWORK LIMITED | — | 5 | 4 |
| AS214606GB | LINX-INTERNAL London Internet Exchange Ltd. | — | — | 0 |
| AS202489GB | SDHL Shop Direct Holdings Limited | — | — | 0 |
| AS208576GB | aam-uk Arts Alliance Media Ltd | — | — | 0 |
| AS207312GB | blujay-uk BluJay Solutions Ltd | — | — | 0 |
| AS204037GB | qernal Qernal LTD | — | — | 0 |
| AS207268GB | STREXP STRATEGIC EXPLORATIONS LTD | — | 24 | 6 |
| AS199501GB | RFLNHS Royal Free Hospital | — | — | 0 |
| AS62079GB | RAPIDIX Inferno Communications Ltd | — | — | 0 |
| AS198617GB | PrenHost PrenHost Ltd | — | — | 0 |
| AS213190GB | STACLAR-CARRIER Staclar Carrier Ltd. | — | — | 0 |
| AS211893GB | CTUK-AS CITY TELECOM LTD | — | — | 0 |
| AS210208GB | EA-CH-GENEVA Electronic Arts Limited | — | — | 0 |
| AS205464GB | dyfedit Voneus Ltd | — | — | 0 |
| AS44754GB | SPACEMINE-AS SpaceMine Ltd | — | 1 | 1 |
| AS47386GB | TRIJITNET-UK TRIJIT LIMITED | — | — | 0 |
| AS203766GB | AWILLS Andrew Wills | — | 1 | 1 |
| AS214665GB | PROJECT-PC Adam Beddall | — | — | 0 |
| AS212265GB | NCL-IX Stellium Networks Limited | — | — | 0 |
| AS212180GB | ERL-HSCN Everlight Radiology Limited | — | — | 0 |
| AS206976GB | KADFIRE Kadfire Limited | — | — | 0 |
| AS215754GB | FIBREWAVE-CUST Fiberwave Broadband Ltd | — | — | 0 |
| AS215022GB | FWLB-networks Jamie Hosker | — | 1 | 1 |
| AS201164GB | Cool-Studio Cool Studio Limited | — | — | 0 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS198372GB | wowfi-as Futility Ltd | — | — | 0 |
| AS197872GB | EA-NL-AMSTERDAM_DC Electronic Arts Limited | — | — | 0 |
| AS197677GB | BENWELL-AS Mr David John Benwell | — | — | 0 |
| AS51805GB | cantab Gam Systematic LLP | — | — | 0 |
| AS199398GB | LDNFLATS-AS LDNFLATS LTD | — | — | 0 |
| AS213085GB | LOGINELTDAS Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS39139GB | Menzies-Aviation-PLC-AS Menzies Aviation Plc | — | — | 0 |
| AS34413GB | Matrix Chess Limited | — | — | 0 |
| AS35143GB | BICOMDOO Bicom Systems Limited | — | — | 0 |
| AS43629GB | VM-GCN Virgin Media Limited | — | — | 0 |
| AS213660GB | elisamurphy Elisa Murphy | — | — | 0 |
| AS212391GB | CentralNic-Anycast-K CentralNic Ltd | — | — | 0 |
| AS44402GB | GFINET-AS GFI Holdings Limited | — | — | 0 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 2 | 2 |
| AS199507GB | THALES-DNSP Thales UK Limited | — | — | 0 |
| AS202990GB | WEB42 Web42 Solutions Ltd | — | — | 0 |
| AS207140GB | SKYENET Sleat Community Trust | — | — | 0 |
| AS201690GB | CallWithMe-AS CALLWITHME LTD. | — | — | 0 |
| AS201508GB | Connexin Connexin Limited | — | — | 0 |