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 |
|---|---|---|---|---|
| AS201131 | Hosting Provider | 3 | 5 | LIGA HOSTING LTD |
| AS25376 | ISP & Mobile | 3 | 5 | Netnorth Limited |
| AS199654 | Hosting Provider | 3 | 4 | Oxide Group Limited |
| AS209505 | ISP & Mobile | 3 | 4 | Unchained ISP Limited |
| AS210054 | ISP & Mobile | 3 | 4 | NCG Energy Ltd |
| AS197669 | Other Business | 3 | 3 | CloudCall LTD |
| AS199462 | ISP & Mobile | 3 | 3 | NETISP LTD |
| AS44205 | Other Business | 3 | 3 | Indigo Integrated Solutions Limited |
| AS48804 | Other Business | 3 | 3 | GMO GlobalSign Ltd |
| AS199629 | Other Business | 3 | 2 | 4MS Network Solutions Ltd. |
| AS34790 | ISP & Mobile | 3 | 2 | TFM NETWORKS LIMITED |
| AS42344 | Other Business | 3 | 2 | Subtopia Ltd |
| AS44332 | Other Business | 3 | 2 | Centrilogic Ltd |
| AS44934 | Other Business | 3 | 2 | Arachsys Internet Services Ltd |
| AS58051 | Other Business | 3 | 2 | Alpha Internet Limited |
| AS59493 | Hosting Provider | 3 | 2 | Cudo Ventures Ltd |
| AS16164 | ISP & Mobile | 3 | 1 | Sohonet Limited |
| AS16174 | Hosting Provider | 3 | 1 | Intuitiv Ltd. |
| AS198723 | Education | 3 | 1 | University of Reading |
| AS200675 | Hosting Provider | 3 | 1 | NORTHERN DATA SERVICES (UK) LIMITED |
| AS202548 | Other Business | 3 | 1 | Quadris Ltd |
| AS203057 | Other Business | 3 | 1 | VillageNet Ltd |
| AS203070 | Other Business | 3 | 1 | Yahoo-UK Limited |
| AS203219 | Other Business | 3 | 1 | Yahoo-UK Limited |
| AS203220 | Other Business | 3 | 1 | Yahoo-UK Limited |
| AS204050 | Other Business | 3 | 1 | Yoti Ltd |
| AS204598 | ISP & Mobile | 3 | 1 | Village Networks Ltd. |
| AS204928 | Other Business | 3 | 1 | Bonsai Hosting ltd |
| AS206049 | ISP & Mobile | 3 | 1 | Communicate Technology LTD |
| AS207195 | Other Business | 3 | 1 | Intelligent Exchanges Limited |
| AS207995 | Other Business | 3 | 1 | LF Holdco 2 Limited |
| AS208711 | Hosting Provider | 3 | 1 | Vyper Hosting Limited |
| AS208802 | ISP & Mobile | 3 | 1 | Netavo Global Data Services Ltd |
| AS209723 | Other Business | 3 | 1 | EXPERT NETCLOUD LLP |
| AS210495 | Hosting Provider | 3 | 1 | WENIUM LTD |
| AS210767 | Hosting Provider | 3 | 1 | Link Host Ltd. |
| AS210874 | Other Business | 3 | 1 | Box Broadband Limited |
| AS211878 | Hosting Provider | 3 | 1 | All Simple Internet Services LLP |
| AS212032 | Other Business | 3 | 1 | DirectPath Communications Limited |
| AS212217 | Other Business | 3 | 1 | BB-Online UK Ltd |
| AS213603 | ISP & Mobile | 3 | 1 | Hull Fibre Ltd |
| AS214663 | Other Business | 3 | 1 | DanBot Hosting LTD |
| AS215023 | Other Business | 3 | 1 | LIMEE NETWORK LTD |
| AS216104 | ISP & Mobile | 3 | 1 | Photonic Networks Ltd |
| AS29009 | ISP & Mobile | 3 | 1 | UK Broadband Ltd. |
| AS35551 | Hosting Provider | 3 | 1 | TGL Services (UK) Ltd |
| AS39458 | Hosting Provider | 3 | 1 | Real Hosts Limited |
| AS41355 | Hosting Provider | 3 | 1 | Team Blue Carrier Limited |
| AS42217 | Other Business | 3 | 1 | The Goodwood Estate Company Limited |
| AS42775 | Other Business | 3 | 1 | ADWORLDS TECHNOLOGIES LP |
| AS43408 | Other Business | 3 | 1 | Orange Cyberdefense UK Limited |
| AS43428 | Other Business | 3 | 1 | Yahoo-UK Limited |
| AS44671 | ISP & Mobile | 3 | 1 | Skyline Networks & Consultancy Ltd |
| AS47227 | Other Business | 3 | 1 | Charles Briscoe-Smith trading as Servology |
| AS47704 | Other Business | 3 | 1 | Academia Ltd |
| AS47768 | Other Business | 3 | 1 | UK Intis Telecom LTD |
| AS48620 | ISP & Mobile | 3 | 1 | Beaming Ltd |
| AS48628 | ISP & Mobile | 3 | 1 | CoreISP Group Limited |
| AS48825 | Hosting Provider | 3 | 1 | Fast4networks Ltd |
| AS5459 | Other Business | 3 | 1 | London Internet Exchange Ltd. |
| AS5552 | Hosting Provider | 3 | 1 | Redcentric Solutions Ltd |
| AS58246 | ISP & Mobile | 3 | 1 | Highland Broadband Networks Limited |
| AS59565 | Hosting Provider | 3 | 1 | Cronos Internet Ltd |
| AS59933 | Other Business | 3 | 1 | Sensical Services Limited |
| AS59953 | ISP & Mobile | 3 | 1 | Purefibre Internet Ltd. |
| AS60241 | ISP & Mobile | 3 | 1 | High-Speed Universal Broadband Services C.I.C. |
| AS60793 | Other Business | 3 | 1 | TELEFONICA TECH NORTHERN IRELAND LIMITED |
| AS60868 | Other Business | 3 | 1 | Runtime Collective Limited |
| AS61012 | Other Business | 3 | 1 | Livedrive Internet Ltd. |
| AS62059 | Other Business | 3 | 1 | Turbo Leisure Ltd |
| AS64435 | ISP & Mobile | 3 | 1 | The Communication GATEWAY LTD |
| AS6894 | ISP & Mobile | 3 | 1 | KDDI Europe Ltd |
| AS8613 | ISP & Mobile | 3 | 1 | Wavenet Limited |
| AS9153 | Other Business | 3 | 1 | Burstfire Networks Ltd |
| AS11856 | Other Business | 3 | 0 | XC Technology Holdings LTD |
| AS16339 | Hosting Provider | 3 | 0 | Virtual Internet (UK) Limited |
| AS196778 | Government | 3 | 0 | Transport for London |
| AS196809 | Other Business | 3 | 0 | FremantleMedia Limited |
| AS197409 | Other Business | 3 | 0 | Co-operative Group Limited |
| AS197462 | Other Business | 3 | 0 | UPHOST SOLUTIONS LIMITED |
| AS198306 | Other Business | 3 | 0 | AIG Europe (Services) Limited |
| AS198623 | Hosting Provider | 3 | 0 | ISUMO Ltd |
| AS199286 | Other Business | 3 | 0 | Abtec Network Systems LTD |
| AS199455 | ISP & Mobile | 3 | 0 | Virgin WiFi Ltd |
| AS200147 | Other Business | 3 | 0 | Hosting Techniques Limited |
| AS200164 | Other Business | 3 | 0 | The Random House Group Limited |
| AS200418 | Other Business | 3 | 0 | Victor Connect Ltd. |
| AS200552 | Hosting Provider | 3 | 0 | Acklo Ltd |
| AS201358 | Other Business | 3 | 0 | FNZ (UK) Ltd |
| AS201409 | Hosting Provider | 3 | 0 | HOSTSHIELD LTD |
| AS201664 | Other Business | 3 | 0 | NetWarm LTD |
| AS201864 | Other Business | 3 | 0 | MINHOCO 84 LIMITED |
| AS202154 | Other Business | 3 | 0 | Brevan Howard Asset Management LLP |
| AS202364 | Hosting Provider | 3 | 0 | Grid Hosting Limited |
| AS202630 | Hosting Provider | 3 | 0 | Sequential Networks Limited |
| AS202901 | Other Business | 3 | 0 | Netcall Technology Limited |
| AS203035 | Other Business | 3 | 0 | Xara Computers (UK) Ltd |
| AS203149 | Other Business | 3 | 0 | UrbanNet Fibre LTD |
| AS203204 | Other Business | 3 | 0 | Serviced Cloud Ltd |
| AS203372 | Other Business | 3 | 0 | GSA Capital Services Ltd |