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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
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 | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 100 |
| 1.3K |
| — |
| 5 |
| AS49657GB | TNSI Transaction Network Services (UK) LTD | 1.3K | — | 4 |
| AS2129GB | HP-EUROPE-AS-TRADE EntServ UK Limited | 1.3K | — | 2 |
| AS198426GB | Voneus Voneus Ltd | 1.3K | — | 2 |
| AS28959GB | VITOL-AS Vitol Services Ltd | 1.3K | — | 5 |
| AS206223GB | Teledyne-UK Teledyne Limited | 1.3K | — | 2 |
| AS39602GB | TCG-AS The Cent.re Group Limited | 1.3K | 524.3K | 5 |
| AS210206GB | METROSECURITY-AS Metro Security (GB) PLC | 1.3K | 589.8K | 6 |
| AS39633GB | PITCORE COMPUTER SYSTEMS INTEGRATION GROUP LIMITED | 1.3K | — | 5 |
| AS206490GB | SOUTHENDBC-AS Southend-on-Sea City Council | 1.3K | — | 2 |
| AS199456GB | VLDTECH-ASN VALID TECHNOLOGY L.P. | 1.3K | 32.8K | 7 |
| AS211393GB | VITRIFINET Vitrifi Limited | 1.3K | 524.3K | 3 |
| AS59717GB | ARCO-AS Arco Limited | 1.3K | 524.3K | 3 |
| AS59820GB | Astro Astro Communications LTD | 1.3K | — | 2 |
| AS198895GB | ApexBroadband Techade Ltd | 1.3K | 524.3K | 6 |
| AS213001GB | LA5 LA5 Digital LTD | 1.3K | 2 | 6 |
| AS60492GB | MIMECAST-JE Mimecast Services Limited | 1.3K | — | 5 |
| AS216180GB | WHG-AUS WHG Hosting Services Ltd | 1.3K | — | 5 |
| AS50826GB | Moelis-and-Company-UK-LLP Moelis & Company UK LLP | 1K | — | 1 |
| AS213451GB | CILIXNET-AS Cilix Limited | 1K | 65.5K | 5 |
| AS208833GB | MYCOMMS MyComms Ltd | 1K | — | 1 |
| AS199946GB | Ctalk Ctalk Limited | 1K | — | 4 |
| AS60237GB | theWestBrom WEST BROMWICH BUILDING SOCIETY FOUNDATION | 1K | — | 1 |
| AS44749GB | Pinnacom-ISP Pinnacom Ltd | 1K | 1M | 10 |
| AS39530GB | parker James Parker | 1K | — | 1 |
| AS201277GB | Eloquent-AS Eloquent Technologies Ltd | 1K | 524.3K | 2 |
| AS215672GB | MoeChuang-Network MoeChuang Network Limited | 1K | 16 | 5 |
| AS205052GB | VISIONDATASOLUTIONS Vision Data Solutions LLP | 1K | 524.3K | 3 |
| AS213549GB | SATISFYHOST SATISFYHOST LTD | 1K | 2 | 6 |
| AS197758GB | NXLAYER NXLayer Ltd | 1K | 524.3K | 2 |
| AS50489GB | ORIEDGE Radiant Infrastructure 1 Limited | 1K | — | 4 |
| AS202212GB | DWEBS-AS DWebs Ltd | 1K | 65.5K | 2 |
| AS205106GB | PEASOUP Pea Soup Hosting Limited | 1K | — | 3 |
| AS201024GB | DATAWEBGLOBAL-AS DATAWEB GLOBAL LP. | 1K | — | 2 |
| AS208765GB | Bulletproof Bullet Proof VPN Ltd | 1K | 524.3K | 5 |
| AS205996GB | Interfiber Interfiber Ltd | 1K | 65.5K | 2 |
| AS39414GB | BYTEFETCH ByteFetch Ltd | 1K | — | 1 |
| AS51031GB | StarNetwork w1n ltd | 1K | 1 | 4 |
| AS209113GB | PRECEDENCE Precedence Technologies Ltd | 1K | — | 3 |
| AS62145GB | Bango BANGO.NET Ltd | 1K | — | 4 |
| AS33968GB | InternetEngineeringAS EASYSPACE LIMITED | 1K | — | 1 |
| AS204486GB | CHES-EAST Cheshire East Council | 1K | — | 1 |
| AS6759GB | IOTX Pelion IoT Limited | 1K | — | 4 |
| AS39610GB | LCH-CLEARNET LCH Group Holdings Limited | 1K | — | 3 |
| AS207511GB | LONDSTOCK-APAC London Stock Exchange PLC | 1K | — | 3 |
| AS204939GB | TAC-COMMUNICATIONS-UK TAC COMMUNICATIONS LTD | 1K | 524.3K | 2 |
| AS201289GB | ESENDEX COMMIFY UK LIMITED | 1K | — | 1 |