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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 |
| 256 |
| 65.6K |
| 5 |
| AS206981GB | TeritumDevelopment Christopher Mountford | 256 | 1 | 2 |
| AS215187GB | PROMISED God Promised Me Networks LTD | 256 | — | 1 |
| AS213798GB | POWELL-AS Jude Gabriel Powell | 256 | 284 | 15 |
| AS205200GB | BOLDYN-UK BOLDYN NETWORKS UK LIMITED | 256 | — | 1 |
| AS216036GB | TOTALCOMMS-AS Signal Telecom Ltd | 256 | — | 1 |
| AS60914GB | TelecomsConsortiumLtd Telecoms Consortium Ltd. | 256 | — | 1 |
| AS198231GB | SIXNET Sixnet Operation Ltd | 256 | — | 1 |
| AS57770GB | ECHOINTERNET Echo Internet Limited | 256 | — | 1 |
| AS200251GB | cwg Cineworld Cinemas Limited | 256 | — | 1 |
| AS12628GB | SCREAMING-NET-AS JACO ENGELBRECHT | 256 | 1 | 2 |
| AS16339GB | VI-UK Virtual Internet (UK) Limited | 256 | — | 1 |
| AS211142GB | as_gaussmanltd CARDOCK HOSTING LIMITED | 256 | — | 1 |
| AS207067GB | Gigasonic Commsworld Ltd | 256 | 65.5K | 2 |
| AS210192GB | TOPLINESYSTEMS Topline Systems Ltd | 256 | — | 1 |
| AS200597GB | DIGITALK-SG1 DIGITALK Limited | 256 | — | 1 |
| AS219040GB | BREEZENODES Breezenodes Ltd | 256 | 2 | 3 |
| AS41553GB | Reed-Managed-Services Reed Specialist Recruitment Limited | 256 | — | 1 |
| AS41548GB | MEDWAY-AS Medway Council | 256 | — | 1 |
| AS207601GB | EA-FR-LYON Electronic Arts Limited | 256 | — | 1 |
| AS60890GB | CENTRALNIC-ANYCAST-B CentralNic Ltd | 256 | 1 | 2 |
| AS214420GB | CLNEXUS Conor Lewis | 256 | 78.6K | 14 |
| AS3252GB | FBRX-AS Fiberax Networking&Cloud Ltd | 256 | — | 1 |
| AS200280GB | CameronSharp Cameron Sharp | 256 | 1 | 2 |
| AS212781GB | Hypercon Hypercon Ltd | 256 | — | 1 |
| AS39617GB | CONSULTANCY-ASN Chris Burton | 256 | 1 | 2 |
| AS34693GB | CME-AS-LD4-1 CME Operations Limited | 256 | — | 1 |
| AS218757GB | MyCheapHost MYCHEAP LTD | 256 | — | 1 |
| AS31632GB | OAG-AS OAG Aviation WorldWide Limited | 256 | — | 1 |
| AS47255GB | MCDEU02 MCD Europe Limited | 256 | — | 1 |
| AS209750GB | MBX-AS MBX DIGITAL LIMITED | 256 | — | 1 |
| AS59617GB | ANDYD Andy Davidson | 256 | 1 | 2 |
| AS213646GB | monkey-tree-hosting Monkey Tree Hosting Limited | 256 | 131.1K | 3 |
| AS51946GB | NEWCASTLE-UNI-NUSAJAYA-CAMPUS University of Newcastle upon Tyne | 256 | — | 1 |
| AS207273GB | PHAROAH-AS Pharoah Tools Limited | 256 | — | 1 |
| AS218950GB | VYTAL VYTAL TECHNOLOGY LTD | 256 | — | 1 |
| AS198628GB | FIDESSA-AS FIDESSA TRADING UK LIMITED | 256 | — | 1 |
| AS60698GB | LINXNETWORKS Linx-Networks-UK Ltd | 256 | — | 1 |
| AS3220GB | INTERNET-TECHNOLOGY-ADVISORS Internet Technology Advisors Scandinavia Ab | 256 | — | 1 |
| AS204711GB | honest Honest Enterprises Ltd. | 256 | 65.5K | 2 |
| AS56929GB | WBC-NET WANDSWORTH-BOROUGH-COUNCIL | 256 | — | 1 |
| AS201528GB | ORCHID-CELLMARK-CHORLEY Orchid Cellmark Ltd | 256 | 1 | 2 |
| AS209080GB | ASN-EDFMAN E D & F MAN TECHNOLOGY LIMITED | 256 | — | 1 |
| AS20915GB | HUNDRED-PERCENT-IT CYBERHIVE LTD | 256 | — | 1 |
| AS39459GB | PGL-AS Office Unlocked Limited | 256 | — | 1 |
| AS198219GB | CHARLIE-AS Charlie Camilleri | 256 | 11 | 5 |
| AS60735GB | DELIGHTVPS-AS Konstantin Verba | 256 | 77.8K | 5 |