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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 |
| 1K |
| — |
| 2 |
| AS205309GB | prodec_networks Prodec Networks Ltd | 1K | — | 1 |
| AS43442GB | PROVU ProVu Communications Ltd | 1K | 1 | 2 |
| AS203614GB | NEXTTRANSLATE-AS NEXTTRANSLATE LTD | 1K | — | 4 |
| AS209274GB | Kraken-Network-ISP Kraken Network ISP LTD | 1K | — | 4 |
| AS41281GB | KEFF KeFF Networks Ltd | 1K | 2 | 6 |
| AS35180GB | HIPCOM-AS Broadsoft LTD | 1K | 2 | 6 |
| AS201277GB | Eloquent-AS Eloquent Technologies Ltd | 1K | 524.3K | 2 |
| AS60282GB | COVCITYCOUNCIL Coventry City Council | 1K | — | 1 |
| AS206062GB | SpaceDataCentres Space Data Centres Ltd | 1K | — | 1 |
| AS197234GB | stylez STYLEZ AI LTD | 1K | — | 4 |
| AS34344GB | THE-PORT-OF-TILBURY-LONDON-LTD Port Of Tilbury London Ltd | 1K | — | 3 |
| AS201664GB | netwarm NetWarm LTD | 1K | — | 4 |
| AS201867GB | OXAGON-AS OXAGON LIMITED | 1K | — | 4 |
| AS214437GB | nexgen-eu1 NexGen Cloud Ltd | 1K | — | 3 |
| AS207827GB | CSL-IOT CSL (DualCom) Limited | 1K | — | 3 |
| AS207511GB | LONDSTOCK-APAC London Stock Exchange PLC | 1K | — | 3 |
| AS197282GB | WGMAST Wood Group UK Limited | 1K | — | 4 |
| AS50826GB | Moelis-and-Company-UK-LLP Moelis & Company UK LLP | 1K | — | 1 |
| AS198312GB | SPECTRAGROUP Spectra Group (uk) Ltd | 1K | 65.5K | 5 |
| AS62244GB | WBTSUK-AS Watch Tower Bible and Tract Society of Britain | 1K | 65.5K | 2 |
| AS204486GB | CHES-EAST Cheshire East Council | 1K | — | 1 |
| AS50468GB | CITRUS-AS CITRUS TELECOMMUNICATIONS LTD | 1K | — | 4 |
| AS50432GB | RBS-GBM-UKSTAFF Natwest Markets PLC | 1K | — | 3 |
| AS30756GB | CENDANT-AS Travelport International Limited | 1K | — | 2 |
| AS205734GB | TRAPOC Copart UK Limited | 1K | — | 4 |
| AS39414GB | BYTEFETCH ByteFetch Ltd | 1K | — | 1 |
| AS201903GB | EVORIO-AS Evorio Limited | 1K | — | 1 |
| AS206984GB | lypy Lypy Limited | 1K | 524.3K | 3 |
| AS39610GB | LCH-CLEARNET LCH Group Holdings Limited | 1K | — | 3 |
| AS202114GB | Blue_Sky_Systems Blue Sky Systems Limited | 1K | 65.5K | 5 |
| AS60011GB | MYTHIC-BEASTS-USA Mythic Beasts Ltd | 1K | 131.1K | 6 |
| AS44824GB | CALLAGENIX-COLO-LONDON COMMI HOLDINGS LIMITED | 1K | — | 1 |
| AS6759GB | IOTX Pelion IoT Limited | 1K | — | 4 |
| AS212413GB | DWP Department for Work and Pensions | 1K | — | 3 |
| AS203171GB | CHITECHNOLOGY Chi Technology Ltd | 1K | — | 4 |
| AS203582GB | mts M-Tech Systems Ltd | 1K | — | 1 |
| AS50489GB | ORIEDGE Radiant Infrastructure 1 Limited | 1K | — | 4 |
| AS50882GB | MAXNETT Maxnett Ltd. | 1K | — | 1 |
| AS208330GB | ASBLX BLX Limited | 1K | — | 1 |
| AS208804GB | Technological Technological Services Limited | 1K | — | 4 |
| AS207524GB | LONDSTOCK-US London Stock Exchange PLC | 1K | — | 3 |
| AS12884GB | DRW-Investments-AS DRW Investments (UK) Limited | 1K | — | 4 |
| AS219469GB | PRIVATEBYTE-MNT PrivateByte Ltd | 1K | 1 | 5 |
| AS206357GB | ALDERMORE Aldermore Bank PLC | 1K | — | 3 |
| AS208833GB | MYCOMMS MyComms Ltd | 1K | — | 1 |
| AS214351GB | FEMOIT FEMO IT SOLUTIONS LIMITED | 1K | — | 4 |