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 |
|---|---|---|---|---|
| AS209738 | Other Business | 8 | 0 | CURVE INFORMATION TECHNOLOGY LIMITED |
| AS210970 | Other Business | 8 | 0 | mosento LTD |
| AS215000 | Other Business | 8 | 0 | Country Connect Ltd. |
| AS31198 | Other Business | 8 | 0 | SPACE NORWAY (UK) LIMITED |
| AS34931 | Other Business | 8 | 0 | Awareness Software Limited |
| AS41203 | Other Business | 8 | 0 | DPDgroup UK Ltd |
| AS41383 | Other Business | 8 | 0 | Wolseley UK Limited |
| AS41896 | Government | 8 | 0 | Shetland Islands Council |
| AS44403 | Government | 8 | 0 | Bristol City Council |
| AS48463 | Other Business | 8 | 0 | Tradition Financial Services Ltd. |
| AS59836 | Other Business | 8 | 0 | CBRE Limited |
| AS60036 | ISP & Mobile | 8 | 0 | Voneus Ltd |
| AS60969 | Hosting Provider | 8 | 0 | GetOnline Limited |
| AS8444 | Other Business | 8 | 0 | JANUS HENDERSON ADMINISTRATION UK LIMITED |
| AS42237 | Other Business | 7 | 10 | w1n ltd |
| AS205847 | ISP & Mobile | 7 | 9 | GoFibre Holdings Limited |
| AS8943 | Hosting Provider | 7 | 5 | Jump Networks Ltd |
| AS206715 | Other Business | 7 | 4 | UXHOST LTD |
| AS49418 | Other Business | 7 | 4 | NETSHIELD LTD |
| AS198328 | Other Business | 7 | 3 | Trayport Limited |
| AS203185 | Other Business | 7 | 3 | PEBBLETREE LTD |
| AS60841 | Hosting Provider | 7 | 3 | berrybyte Limited |
| AS8676 | Other Business | 7 | 3 | PRT Systems Limited |
| AS197715 | Hosting Provider | 7 | 2 | Serverbike LTD |
| AS44684 | Hosting Provider | 7 | 2 | Mythic Beasts Ltd |
| AS51055 | Other Business | 7 | 2 | Bridge Fibre Limited |
| AS51439 | Other Business | 7 | 2 | AIG Europe (Services) Limited |
| AS59597 | ISP & Mobile | 7 | 2 | 4COM TECHNOLOGIES LIMITED |
| AS8801 | ISP & Mobile | 7 | 2 | Rocket Fibre Ltd |
| AS201862 | Hosting Provider | 7 | 1 | VMhosts Ltd |
| AS203568 | ISP & Mobile | 7 | 1 | Airband Community Internet Ltd |
| AS210893 | Hosting Provider | 7 | 1 | Layered Technologies Limited |
| AS213495 | Other Business | 7 | 1 | SERVITRO LTD |
| AS33941 | Other Business | 7 | 1 | GConnect Technology Ltd |
| AS42611 | ISP & Mobile | 7 | 1 | Full Fibre Limited |
| AS49572 | Other Business | 7 | 1 | Fujitsu Services Ltd. |
| AS49775 | Hosting Provider | 7 | 1 | Lunar Digital Solutions Limited |
| AS56990 | ISP & Mobile | 7 | 1 | Syscomm Limited |
| AS6660 | ISP & Mobile | 7 | 1 | VODAFONE ENTERPRISE EQUIPMENT LIMITED |
| AS15768 | Other Business | 7 | 0 | WorldPay (UK) Limited |
| AS197246 | Other Business | 7 | 0 | BELGRAVIA MEDIA LTD |
| AS198554 | Other Business | 7 | 0 | 8X8 UK Limited |
| AS201101 | Other Business | 7 | 0 | NATS (En Route) Ltd |
| AS201855 | Other Business | 7 | 0 | RAYMOND JAMES INVESTMENT SERVICES LIMITED |
| AS202206 | Other Business | 7 | 0 | FAT MEDIA LTD |
| AS202454 | ISP & Mobile | 7 | 0 | Pine Media Ltd |
| AS206237 | Other Business | 7 | 0 | Barclays Bank PLC |
| AS20878 | Other Business | 7 | 0 | MeetingZone Limited |
| AS21296 | Other Business | 7 | 0 | Pricewaterhousecoopers Services Limited |
| AS21339 | ISP & Mobile | 7 | 0 | Contingency Networks Ltd |
| AS29219 | Other Business | 7 | 0 | SEMTEC LIMITED |
| AS29575 | Other Business | 7 | 0 | London Stock Exchange PLC |
| AS30914 | Hosting Provider | 7 | 0 | Redcentric Solutions Ltd |
| AS41099 | ISP & Mobile | 7 | 0 | Global Reach Networks Limited |
| AS41477 | Other Business | 7 | 0 | LMAX Limited |
| AS42944 | Other Business | 7 | 0 | Ticketmaster UK Limited |
| AS43599 | Other Business | 7 | 0 | Broadband N.I. Ltd. |
| AS48273 | Other Business | 7 | 0 | ESSENSYS (UK) Ltd. |
| AS48866 | Other Business | 7 | 0 | Netcracker Technology EMEA Limited |
| AS49546 | Other Business | 7 | 0 | Voicetec sys Limited |
| AS51100 | Other Business | 7 | 0 | Kier Ltd |
| AS57228 | Other Business | 7 | 0 | Axians Networks Limited |
| AS60045 | Other Business | 7 | 0 | Kube Networks Ltd |
| AS196745 | Hosting Provider | 6 | 10 | Datacenta Hosting Ltd |
| AS212512 | Other Business | 6 | 9 | Detai Prosperous Technologies Limited |
| AS60157 | Other Business | 6 | 6 | Antheus Telecom Ltd |
| AS56718 | Other Business | 6 | 5 | Redshelf Ltd |
| AS203315 | Hosting Provider | 6 | 4 | Web Wiz Ltd |
| AS39356 | ISP & Mobile | 6 | 4 | Avanti Broadband Ltd |
| AS62246 | Other Business | 6 | 4 | WJY Limited |
| AS16349 | Hosting Provider | 6 | 3 | Fon Wireless LTD |
| AS58188 | Other Business | 6 | 3 | Sharpstream Ltd |
| AS12496 | Other Business | 6 | 2 | Infinity Developments Limited |
| AS201093 | Other Business | 6 | 2 | Telit Communications Limited |
| AS201579 | Hosting Provider | 6 | 2 | HOSTGNOME LTD |
| AS201902 | Other Business | 6 | 2 | Bicom Systems Limited |
| AS209557 | Hosting Provider | 6 | 2 | GEELINX LTD |
| AS213737 | Other Business | 6 | 2 | AYOSOFT LTD |
| AS34660 | Other Business | 6 | 2 | Roebuck Group Limited |
| AS35180 | Other Business | 6 | 2 | Broadsoft LTD |
| AS42579 | Other Business | 6 | 2 | Comtec Enterprises Ltd |
| AS61087 | Hosting Provider | 6 | 2 | DGTL TECH UK LLP |
| AS196962 | Other Business | 6 | 1 | NSI (Holdings) Limited |
| AS200105 | Other Business | 6 | 1 | JUNGLELABS LTD |
| AS202147 | Other Business | 6 | 1 | VPSUS LTD |
| AS204154 | Hosting Provider | 6 | 1 | FIRST SERVER LIMITED |
| AS205091 | Other Business | 6 | 1 | EuroNet Internet Ltd |
| AS211389 | ISP & Mobile | 6 | 1 | Briant Broadband Limited |
| AS21233 | ISP & Mobile | 6 | 1 | Atlas Business Group of Companies Ltd |
| AS213354 | Hosting Provider | 6 | 1 | INTERNATIONAL HOSTING SOLUTIONS LLP |
| AS215262 | Hosting Provider | 6 | 1 | Cloud Nord Limited |
| AS39175 | ISP & Mobile | 6 | 1 | Connective Online Limited |
| AS39545 | Other Business | 6 | 1 | Fluidone Ltd. |
| AS49158 | ISP & Mobile | 6 | 1 | WIFINITY NETWORKS LIMITED |
| AS5564 | Hosting Provider | 6 | 1 | Brightsolid Online Technology Ltd |
| AS56396 | Other Business | 6 | 1 | NEXXEN GROUP LTD |
| AS61231 | ISP & Mobile | 6 | 1 | Neos Networks Limited |
| AS12761 | ISP & Mobile | 6 | 0 | COLT Technology Services Group Limited |
| AS196646 | Hosting Provider | 6 | 0 | Datum Datacentres Limited |
| AS197651 | Other Business | 6 | 0 | FIC SHARECO LIMITED |