A list of all United Kingdom ASNs including hosting providers, ISPs, and businesses with announced IPv4 and IPv6 prefixes.
| ASN | Type | IPv4 Routes | IPv6 Routes | Company |
|---|---|---|---|---|
| AS208330 | Other Business | 1 | 0 | BLX Limited |
| AS208524 | Other Business | 1 | 0 | VITS LIMITED |
| AS208623 | Other Business | 1 | 0 | Threadneedle Asset Management Holdings Ltd |
| AS208781 | Other Business | 1 | 0 | SMART CT LIMITED |
| AS208833 | ISP & Mobile | 1 | 0 | MyComms Ltd |
| AS208895 | Hosting Provider | 1 | 0 | Intelligence Hosting Services Limited |
| AS208902 | Other Business | 1 | 0 | Valero Energy Ltd |
| AS209015 | Other Business | 1 | 0 | Ten Time Limited |
| AS209080 | Other Business | 1 | 0 | E D & F MAN TECHNOLOGY LIMITED |
| AS20915 | Hosting Provider | 1 | 0 | CYBERHIVE LTD |
| AS209324 | Other Business | 1 | 0 | Genius Sports UK Limited |
| AS209329 | Other Business | 1 | 0 | FOCUS 4 U LTD |
| AS209340 | Other Business | 1 | 0 | TIG Management Services Limited |
| AS209447 | ISP & Mobile | 1 | 0 | RETN Limited |
| AS209540 | Other Business | 1 | 0 | Expedia.com Ltd. |
| AS209734 | Other Business | 1 | 0 | STARFALL DISTRIBUTION LTD |
| AS209750 | Other Business | 1 | 0 | MBX DIGITAL LIMITED |
| AS20976 | Other Business | 1 | 0 | Domainmaster LTD |
| AS209899 | Other Business | 1 | 0 | zananet Limited |
| AS209931 | ISP & Mobile | 1 | 0 | Virair Limited |
| AS209997 | Other Business | 1 | 0 | SECURITAS TECHNOLOGY LIMITED |
| AS209999 | Other Business | 1 | 0 | Ascot Racecourse Ltd |
| AS210005 | Other Business | 1 | 0 | Easysoft Ltd |
| AS210087 | Other Business | 1 | 0 | Ontix Sites No1 Limited |
| AS210096 | ISP & Mobile | 1 | 0 | Stem Connect LTD |
| AS210101 | Other Business | 1 | 0 | Cyber Pathogen Ltd |
| AS210192 | Other Business | 1 | 0 | Topline Systems Ltd |
| AS210203 | ISP & Mobile | 1 | 0 | RETN Limited |
| AS210216 | Other Business | 1 | 0 | HCL Technologies UK Limited |
| AS210279 | Other Business | 1 | 0 | DIGITAL MEDIA TECHNOLOGIES LTD |
| AS210549 | Other Business | 1 | 0 | CDW Ltd |
| AS210584 | Other Business | 1 | 0 | PricewaterhouseCoopers IT Services Limited |
| AS210727 | Other Business | 1 | 0 | Buy Limited |
| AS210809 | Other Business | 1 | 0 | UniFlex Systems Limited |
| AS210938 | Other Business | 1 | 0 | Whitbread Group PLC |
| AS210988 | Government | 1 | 0 | London Borough Of Hammersmith & Fulham |
| AS211015 | Government | 1 | 0 | UK Home Office (The Secretary of State for the Home Department) |
| AS211032 | Hosting Provider | 1 | 0 | LOBOS NETWORKING LTD |
| AS211049 | Government | 1 | 0 | Department of Health and Social Care |
| AS211067 | Government | 1 | 0 | Eastbourne Borough Council |
| AS211118 | Other Business | 1 | 0 | WORLDONE RESEARCH LIMITED |
| AS211120 | Hosting Provider | 1 | 0 | CARDOCK HOSTING LIMITED |
| AS211142 | Hosting Provider | 1 | 0 | CARDOCK HOSTING LIMITED |
| AS211165 | Hosting Provider | 1 | 0 | CARDOCK HOSTING LIMITED |
| AS211188 | Other Business | 1 | 0 | Business Teleports and Solutions Limited |
| AS211189 | Other Business | 1 | 0 | Thermo Electron Ltd |
| AS211198 | Other Business | 1 | 0 | WhiteSpider Enterprise Services Limited |
| AS211303 | Other Business | 1 | 0 | Electronic Arts Limited |
| AS211339 | Other Business | 1 | 0 | Vortia Ltd |
| AS211374 | ISP & Mobile | 1 | 0 | Motion Applied Limited |
| AS211409 | Hosting Provider | 1 | 0 | FoxiBytes LTD |
| AS21160 | Other Business | 1 | 0 | Markel International Services Ltd |
| AS211667 | Other Business | 1 | 0 | COMPANY 3 STUDIOS UK LTD |
| AS211687 | Other Business | 1 | 0 | HCORE LTD |
| AS211803 | Hosting Provider | 1 | 0 | CARDOCK HOSTING LIMITED |
| AS211829 | Other Business | 1 | 0 | ZAHA HADID LIMITED |
| AS211855 | Other Business | 1 | 0 | In The Frame (Manchester) Ltd |
| AS212031 | Hosting Provider | 1 | 0 | BIT Solutions Ltd |
| AS212124 | Other Business | 1 | 0 | Upmind Automation Limited |
| AS21218 | Other Business | 1 | 0 | EBC Group (UK) Ltd |
| AS212194 | Other Business | 1 | 0 | YUUSEI LTD |
| AS212195 | Hosting Provider | 1 | 0 | Nexstor Ltd |
| AS212404 | Other Business | 1 | 0 | Integral UK Limited |
| AS212419 | Other Business | 1 | 0 | Wunderman Thompson Commerce UK Ltd |
| AS212446 | Other Business | 1 | 0 | CACI Ltd |
| AS212459 | Other Business | 1 | 0 | Celer Technologies Limited |
| AS212469 | Hosting Provider | 1 | 0 | ServerHouse Ltd |
| AS212486 | Other Business | 1 | 0 | KIGEN (UK) LIMITED |
| AS212606 | Other Business | 1 | 0 | DiPocket Limited |
| AS212729 | Other Business | 1 | 0 | Everlight Radiology Limited |
| AS212733 | Other Business | 1 | 0 | Netquirk Limited |
| AS212781 | Other Business | 1 | 0 | Hypercon Ltd |
| AS212788 | Hosting Provider | 1 | 0 | Edge Network Technologies Ltd |
| AS212797 | Other Business | 1 | 0 | Perform Content Services Limited |
| AS212880 | ISP & Mobile | 1 | 0 | Rydal Communications Ltd |
| AS213000 | Other Business | 1 | 0 | Alliance Medical Limited |
| AS213016 | Other Business | 1 | 0 | Holker Network Solutions Ltd |
| AS213119 | Other Business | 1 | 0 | ALZ Software Ltd |
| AS213163 | Other Business | 1 | 0 | FREE UNLIMITED VPN LTD |
| AS213272 | Hosting Provider | 1 | 0 | Beeks Financial Cloud Ltd |
| AS213287 | Other Business | 1 | 0 | Pure IP Limited |
| AS213493 | Other Business | 1 | 0 | NYRU Services Limited |
| AS213515 | Other Business | 1 | 0 | Honeybank Studios LTD |
| AS213546 | Other Business | 1 | 0 | Quick Bytes LTD |
| AS213786 | Other Business | 1 | 0 | IDASH SOLUTIONS LIMITED |
| AS213831 | Other Business | 1 | 0 | Toby Dixon |
| AS213885 | Other Business | 1 | 0 | Wilxite Ltd |
| AS213893 | Other Business | 1 | 0 | IPTransit Business LTD |
| AS214079 | Other Business | 1 | 0 | LendNodes LTD |
| AS214116 | Other Business | 1 | 0 | Acora Limited |
| AS214162 | ISP & Mobile | 1 | 0 | Merlin Telecommunications Ltd |
| AS214177 | Other Business | 1 | 0 | Validation Labs LTD |
| AS214214 | Other Business | 1 | 0 | Threadneedle Asset Management Holdings Ltd |
| AS21422 | Other Business | 1 | 0 | Connect internet Solutions Limited |
| AS214284 | Other Business | 1 | 0 | INTERNET MEDIA STREAM LTD |
| AS214295 | ISP & Mobile | 1 | 0 | SKYNET NETWORK LTD |
| AS214314 | Other Business | 1 | 0 | Cushman & Wakefield Debenham Tie Leung Limited |
| AS214315 | Other Business | 1 | 0 | Cushman & Wakefield Debenham Tie Leung Limited |
| AS214424 | Other Business | 1 | 0 | nForto Ltd |
| AS214455 | ISP & Mobile | 1 | 0 | RETN Limited |