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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 |
| AS50489GB | ORIEDGE Radiant Infrastructure 1 Limited | 1K | — | 4 |
| AS35180GB | HIPCOM-AS Broadsoft LTD | 1K | 2 | 6 |
| AS205052GB | VISIONDATASOLUTIONS Vision Data Solutions LLP | 1K | 524.3K | 3 |
| AS56637GB | Fixnetix Fixnetix Ltd | 1K | — | 3 |
| AS201024GB | DATAWEBGLOBAL-AS DATAWEB GLOBAL LP. | 1K | — | 2 |
| AS209113GB | PRECEDENCE Precedence Technologies Ltd | 1K | — | 3 |
| AS39610GB | LCH-CLEARNET LCH Group Holdings Limited | 1K | — | 3 |
| AS60237GB | theWestBrom WEST BROMWICH BUILDING SOCIETY FOUNDATION | 1K | — | 1 |
| AS207827GB | CSL-IOT CSL (DualCom) Limited | 1K | — | 3 |
| AS62145GB | Bango BANGO.NET Ltd | 1K | — | 4 |
| AS206984GB | lypy Lypy Limited | 1K | 524.3K | 3 |
| AS197234GB | stylez STYLEZ AI LTD | 1K | — | 4 |
| AS50826GB | Moelis-and-Company-UK-LLP Moelis & Company UK LLP | 1K | — | 1 |
| AS39414GB | BYTEFETCH ByteFetch Ltd | 1K | — | 1 |
| AS201289GB | ESENDEX COMMIFY UK LIMITED | 1K | — | 1 |
| AS209557GB | GEELINX-AS GEELINX LTD | 1K | 3 | 6 |
| AS41232GB | beeline Beeline Broadband Ltd | 1K | — | 1 |
| AS206246GB | Formosa FORMOSA CAPITAL LP | 1K | 131.1K | 6 |
| AS207511GB | LONDSTOCK-APAC London Stock Exchange PLC | 1K | — | 3 |
| AS50882GB | MAXNETT Maxnett Ltd. | 1K | — | 1 |
| AS50468GB | CITRUS-AS CITRUS TELECOMMUNICATIONS LTD | 1K | — | 4 |
| AS208765GB | Bulletproof Bullet Proof VPN Ltd | 1K | 524.3K | 5 |
| AS202792GB | CLOUD-TRANSIT Clouvider Limited | 1K | — | 4 |
| AS208756GB | deas-001 ALCON TELECOM LTD | 1K | — | 3 |
| AS30756GB | CENDANT-AS Travelport International Limited | 1K | — | 2 |
| AS205734GB | TRAPOC Copart UK Limited | 1K | — | 4 |
| AS204486GB | CHES-EAST Cheshire East Council | 1K | — | 1 |
| AS209274GB | Kraken-Network-ISP Kraken Network ISP LTD | 1K | — | 4 |
| AS210087GB | ONTIX Ontix Sites No1 Limited | 1K | — | 1 |
| AS203614GB | NEXTTRANSLATE-AS NEXTTRANSLATE LTD | 1K | — | 4 |
| AS199946GB | Ctalk Ctalk Limited | 1K | — | 4 |
| AS201664GB | netwarm NetWarm LTD | 1K | — | 4 |
| AS62195GB | STANTEC-UK-AS Stantec UK Limited | 1K | 1 | 2 |
| AS213183GB | WHG-LUX WHG Hosting Services Ltd | 1K | — | 3 |
| AS197594GB | REDSTOR-AS Redstor Limited | 1K | — | 4 |
| AS33968GB | InternetEngineeringAS EASYSPACE LIMITED | 1K | — | 1 |
| AS202212GB | DWEBS-AS DWebs Ltd | 1K | 65.5K | 2 |
| AS204844GB | NCSE-NETWORK-Global NCSE NETWORK LTD | 1K | 4.4K | 18 |
| AS201506GB | INCITO Incito Limited | 1K | 65.5K | 2 |
| AS208330GB | ASBLX BLX Limited | 1K | — | 1 |
| AS44749GB | Pinnacom-ISP Pinnacom Ltd | 1K | 1M | 10 |
| AS205106GB | PEASOUP Pea Soup Hosting Limited | 1K | — | 3 |
| AS50432GB | RBS-GBM-UKSTAFF Natwest Markets PLC | 1K | — | 3 |
| AS209899GB | NUBIS zananet Limited | 1K | — | 1 |
| AS44052GB | PRESSCOMPUTER-ASN ICONIC MEDIA SYSTEMS LIMITED | 1K | — | 3 |
| AS6759GB | IOTX Pelion IoT Limited | 1K | — | 4 |