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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.
3,123 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications PLC | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 168 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 340 |
| AS212238GB | CDNEXT Datacamp Limited | 1M | 4,120 |
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| AS208533GB | CSSUK Clear Street Services UK LTD | — | — | 0 |
| AS207200GB | Krisdev Kristian Hoyle-Johnson | — | — | 0 |
| AS197872GB | EA-NL-AMSTERDAM_DC Electronic Arts Limited | — | — | 0 |
| AS34158GB | BBC-RD-NONUK-AS BBC | — | — | 0 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS200099GB | ASN-EXTLIKES Extlikes UK Marketing Limited | — | — | 0 |
| AS198382GB | FIRSTEASY-AS Teledata UK Limited | — | — | 0 |
| AS43629GB | VM-GCN Virgin Media Limited | — | — | 0 |
| AS33408GB | WHG-SPARE-1 - World Host Group | — | — | 0 |
| AS31270GB | FMN GCI Network Solutions Limited | — | — | 0 |
| AS15565GB | GTT - EMEA Ltd. | — | — | 0 |
| AS42902GB | GLOBECONNECT Clouvider Limited | — | — | 0 |
| AS205648GB | VirgoCube_Limited VirgoCube Limited | — | 256 | 1 |
| AS213447GB | The-Aster-Institute-of-Education ASTER GLOBAL CO. LTD | — | — | 0 |
| AS210425GB | Equiniti Equiniti Services Limited | — | — | 0 |
| AS212018GB | GLFRASER Graeme Fraser | — | — | 0 |
| AS197839GB | RAXEL-AS RAXEL LIMITED | — | — | 0 |
| AS197568GB | PINNACLE-AS PINNACLE INSURANCE MANAGEMENT SERVICES PLC | — | — | 0 |
| AS212902GB | KKL Kustom Konsulting Limited | — | — | 0 |
| AS50871GB | IXBRADFORD IXBRADFORD LIMITED | — | — | 0 |
| AS213026GB | GWILKINSON George Wilkinson | — | 1 | 1 |
| AS47718GB | IMSHealth IQVIA SOLUTIONS HQ LTD | — | — | 0 |
| AS47584GB | STELIA Stelia Ltd | — | — | 0 |
| AS43198GB | OUTSOURCERY-AS GCI Network Solutions Limited | — | — | 0 |
| AS199853GB | HOSTIQOR-AS Hostiqor Limited | — | — | 0 |
| AS204725GB | luna-frankland Luna Frankland | — | 1 | 1 |
| AS35082GB | TALKSTRAIGHT-AS Talk Straight Ltd. | — | — | 0 |
| AS21493GB | PKXGEU GTT - EMEA Ltd. | — | — | 0 |
| AS25376GB | NETNORTH-ASN Netnorth Limited | — | — | 0 |
| AS215499GB | richard-franks Richard Franks | — | — | 0 |
| AS215231GB | volq-capital VolQ Capital Ltd | — | — | 0 |
| AS213660GB | elisamurphy Elisa Murphy | — | — | 0 |
| AS8802GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS198729GB | B4SH Broadband for Surrey Hills Ltd | — | — | 0 |
| AS206036GB | DRT-EXCHANGE Digital Realty (UK) Limited | — | — | 0 |
| AS201762GB | RBK-AS Royal Borough of Kingston Council | — | — | 0 |
| AS205056GB | DHNETWORK DIAHOSTING LIMITED | — | — | 0 |
| AS43251GB | SURFCONTROL-READING Forcepoint Overseas Limited | — | — | 0 |
| AS197040GB | DATAART-BEG DataArt Technologies UK Ltd | — | — | 0 |
| AS59811GB | Voneus Voneus Ltd | — | — | 0 |
| AS52037GB | y-internet Blackbridge Limited | — | — | 0 |
| AS205383GB | PERRYNET Rhys Perry | — | 1 | 1 |
| AS197677GB | BENWELL-AS Mr David John Benwell | — | — | 0 |
| AS212437GB | ADL ADT Defence Limited | — | 524.3K | 1 |
| AS61135GB | TR-SUNUCUCOM TIGOVA NETWORK LIMITED | — | — | 0 |
| AS44402GB | GFINET-AS GFI Holdings Limited | — | — | 0 |