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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.
3,134 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 | 368 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,290 |
| 1K |
| — |
| 1 |
| AS204236GB | uk-div011 Daniel Ionita | 1K | — | 1 |
| AS56670GB | WSCC-AS West Sussex County Council | 1K | — | 2 |
| AS62244GB | WBTSUK-AS Watch Tower Bible and Tract Society of Britain | 1K | 65.5K | 2 |
| AS197282GB | WGMAST Wood Group UK Limited | 1K | — | 4 |
| AS60237GB | theWestBrom WEST BROMWICH BUILDING SOCIETY FOUNDATION | 1K | — | 1 |
| AS207827GB | CSL-IOT CSL (DualCom) Limited | 1K | — | 3 |
| AS198312GB | SPECTRAGROUP Spectra Group (uk) Ltd | 1K | 65.5K | 5 |
| AS208804GB | Technological Technological Services Limited | 1K | — | 4 |
| AS34344GB | THE-PORT-OF-TILBURY-LONDON-LTD Port Of Tilbury London Ltd | 1K | — | 3 |
| AS12884GB | DRW-Investments-AS DRW Investments (UK) Limited | 1K | — | 4 |
| AS201277GB | Eloquent-AS Eloquent Technologies Ltd | 1K | 524.3K | 2 |
| AS201903GB | EVORIO-AS Evorio Limited | 1K | — | 1 |
| AS198306GB | AESL1 AIG Europe (Services) Limited | 1K | — | 3 |
| AS44749GB | Pinnacom-ISP Pinnacom Ltd | 1K | 1M | 10 |
| AS211912GB | WHG-USE2 WHG Hosting Services Ltd | 1K | — | 4 |
| AS43442GB | PROVU ProVu Communications Ltd | 1K | 1 | 2 |
| AS50882GB | MAXNETT Maxnett Ltd. | 1K | — | 1 |
| AS44009GB | SLEEK-ASN Rackspace Ltd. | 1K | 65.5K | 2 |
| AS39414GB | BYTEFETCH ByteFetch Ltd | 1K | — | 1 |
| AS199946GB | Ctalk Ctalk Limited | 1K | — | 4 |
| AS59439GB | VOICEFACTORY-AS EvolveIP LTD | 1K | 0 | 2 |
| AS212413GB | DWP Department for Work and Pensions | 1K | — | 3 |
| AS202212GB | DWEBS-AS DWebs Ltd | 1K | 65.5K | 2 |
| AS206062GB | SpaceDataCentres Space Data Centres Ltd | 1K | — | 1 |
| AS203582GB | mts M-Tech Systems Ltd | 1K | — | 1 |
| AS60193GB | wurzel Wurzel Ltd | 1K | 524.3K | 5 |
| AS33968GB | InternetEngineeringAS EASYSPACE LIMITED | 1K | — | 1 |
| AS209557GB | GEELINX-AS GEELINX LTD | 1K | 4 | 7 |
| AS199788GB | MPS Motion Picture Solutions Limited | 1K | — | 1 |
| AS209113GB | PRECEDENCE Precedence Technologies Ltd | 1K | — | 3 |
| AS210805GB | openinfra-isp-production-uk Open Infra ltd | 1K | 65.5K | 5 |
| AS208765GB | Bulletproof Bullet Proof VPN Ltd | 1K | 524.3K | 5 |
| AS209447GB | RETN-TR-AS RETN Limited | 1K | — | 1 |
| AS201024GB | DATAWEBGLOBAL-AS DATAWEB GLOBAL LP. | 1K | — | 2 |
| AS202114GB | Blue_Sky_Systems Blue Sky Systems Limited | 1K | 65.5K | 5 |
| AS206681GB | IVISTA Ivista Limited | 1K | 524.3K | 2 |
| AS205052GB | VISIONDATASOLUTIONS Vision Data Solutions LLP | 1K | 524.3K | 3 |
| AS201060GB | snetterton SNETTERTON TELECOM LIMITED | 1K | — | 4 |
| AS197234GB | stylez STYLEZ AI LTD | 1K | — | 4 |
| AS208833GB | MYCOMMS MyComms Ltd | 1K | — | 1 |
| AS204939GB | TAC-COMMUNICATIONS-UK TAC COMMUNICATIONS LTD | 1K | 524.3K | 2 |
| AS197758GB | NXLAYER NXLayer Ltd | 1K | 524.3K | 2 |
| AS205106GB | PEASOUP Pea Soup Hosting Limited | 1K | — | 3 |
| AS210087GB | ONTIX Ontix Sites No1 Limited | 1K | — | 1 |
| AS206246GB | Formosa FORMOSA CAPITAL LP | 1K | 131.1K | 6 |
| AS203460GB | vrdn Village Networks Ltd. | 1K | 524.3K | 2 |