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 |
|---|---|---|---|---|
| AS61215 | ISP & Mobile | 4 | 1 | IIJ Europe Limited |
| AS12884 | Other Business | 4 | 0 | DRW Investments (UK) Limited |
| AS131222 | Other Business | 4 | 0 | GamerDating Ltd |
| AS15622 | Hosting Provider | 4 | 0 | Frontline Consultancy and Business Services Limited |
| AS16376 | Other Business | 4 | 0 | SysGroup plc |
| AS196744 | Other Business | 4 | 0 | Capita Business Services Ltd |
| AS197223 | Other Business | 4 | 0 | WEDROPCODE LTD |
| AS197234 | Other Business | 4 | 0 | STYLEZ AI LTD |
| AS197282 | Other Business | 4 | 0 | Wood Group UK Limited |
| AS197594 | Other Business | 4 | 0 | Redstor Limited |
| AS198386 | Other Business | 4 | 0 | THRIVE OPERATIONS LIMITED |
| AS198798 | Other Business | 4 | 0 | OFFICE LIMITED |
| AS198990 | Hosting Provider | 4 | 0 | Pine Hosting LTD |
| AS199448 | Other Business | 4 | 0 | Babble Cloud Holdings Ltd. |
| AS199946 | Other Business | 4 | 0 | Ctalk Limited |
| AS200124 | Other Business | 4 | 0 | FLEXTRADE UK LIMITED |
| AS200751 | Other Business | 4 | 0 | Entigy Ltd |
| AS200870 | ISP & Mobile | 4 | 0 | Retail Technology Services Ltd |
| AS201060 | Other Business | 4 | 0 | SNETTERTON TELECOM LIMITED |
| AS201715 | ISP & Mobile | 4 | 0 | Ineedbroadband Ltd |
| AS201755 | Other Business | 4 | 0 | Squiz UK Limited |
| AS201867 | Other Business | 4 | 0 | OXAGON LIMITED |
| AS202166 | Other Business | 4 | 0 | NetDocuments Limited |
| AS202787 | Other Business | 4 | 0 | Withers LLP |
| AS203171 | Other Business | 4 | 0 | Chi Technology Ltd |
| AS203421 | ISP & Mobile | 4 | 0 | Baltic Broadband Limited |
| AS204116 | Other Business | 4 | 0 | HOSTRELAY GLOBAL LTD |
| AS204239 | ISP & Mobile | 4 | 0 | Abzorb Group Ltd |
| AS204415 | Hosting Provider | 4 | 0 | NexGen Cloud Ltd |
| AS204440 | Other Business | 4 | 0 | STREAMLAND MEDIA UK LIMITED |
| AS205283 | Other Business | 4 | 0 | Greenlight Innovation Ltd |
| AS205693 | Government | 4 | 0 | Driver & Vehicle Licensing Agency |
| AS205734 | Other Business | 4 | 0 | Copart UK Limited |
| AS20577 | Other Business | 4 | 0 | TRADEWEB EUROPE LIMITED |
| AS206078 | ISP & Mobile | 4 | 0 | UltraNetworks Limited |
| AS206289 | Other Business | 4 | 0 | TSB BANKING GROUP LIMITED |
| AS20652 | ISP & Mobile | 4 | 0 | Unitron Systems & Development LTD |
| AS206547 | Other Business | 4 | 0 | Keyloop Holdings (UK) Limited |
| AS206686 | Other Business | 4 | 0 | Nominet UK |
| AS206690 | Hosting Provider | 4 | 0 | Beeks Financial Cloud Ltd |
| AS207784 | Hosting Provider | 4 | 0 | HybrIT Services Ltd |
| AS208636 | Hosting Provider | 4 | 0 | SDC Hosting and Support Ltd |
| AS208804 | ISP & Mobile | 4 | 0 | Technological Services Limited |
| AS209199 | Hosting Provider | 4 | 0 | Cloud Unboxed Limited |
| AS209237 | Government | 4 | 0 | NPL Management LTD |
| AS209274 | Other Business | 4 | 0 | Kraken Network ISP LTD |
| AS211029 | Other Business | 4 | 0 | XTX Markets Limited |
| AS21188 | Other Business | 4 | 0 | Unilever PLC |
| AS211912 | Hosting Provider | 4 | 0 | WHG Hosting Services Ltd |
| AS213388 | Other Business | 4 | 0 | IIC RAIL LIMITED |
| AS213441 | Other Business | 4 | 0 | SLAYER GROUP LIMITED |
| AS213513 | Hosting Provider | 4 | 0 | Computle Limited |
| AS213867 | Other Business | 4 | 0 | TENERITY LIMITED |
| AS25310 | ISP & Mobile | 4 | 0 | Vodafone Limited |
| AS25588 | Hosting Provider | 4 | 0 | Six Degrees Technology Group Limited |
| AS29474 | Hosting Provider | 4 | 0 | Ghoti Limited |
| AS34178 | Other Business | 4 | 0 | Qinetiq Limited |
| AS34523 | Other Business | 4 | 0 | Webroot Services Ltd |
| AS34737 | Other Business | 4 | 0 | Qinetiq Limited |
| AS39550 | Other Business | 4 | 0 | KPMG LLP |
| AS39621 | Other Business | 4 | 0 | Stream UK Media Services Limited |
| AS39884 | ISP & Mobile | 4 | 0 | iNet Telecoms Ltd |
| AS42513 | Other Business | 4 | 0 | Natilik Ltd |
| AS43584 | Other Business | 4 | 0 | Maytech Communications Ltd |
| AS43924 | Other Business | 4 | 0 | IQUO LIMITED |
| AS44305 | Hosting Provider | 4 | 0 | Six Degrees Technology Group Limited |
| AS44745 | Other Business | 4 | 0 | Fidessa PLC |
| AS44955 | Other Business | 4 | 0 | DG Infrastructure Ltd |
| AS47318 | Government | 4 | 0 | West Midlands Ambulance Service NHS Foundation Trust |
| AS47351 | Other Business | 4 | 0 | Red Technology Solutions Limited |
| AS47492 | Other Business | 4 | 0 | Consider IT Limited |
| AS47572 | Other Business | 4 | 0 | Ticketmaster UK Limited |
| AS48688 | Other Business | 4 | 0 | Thales UK Ltd |
| AS49657 | Other Business | 4 | 0 | Transaction Network Services (UK) LTD |
| AS50152 | Other Business | 4 | 0 | Intermedia Technologies Company Limited |
| AS50202 | Other Business | 4 | 0 | Hiscox Underwriting Group Services Ltd |
| AS50468 | Other Business | 4 | 0 | CITRUS TELECOMMUNICATIONS LTD |
| AS50489 | Hosting Provider | 4 | 0 | Radiant Infrastructure 1 Limited |
| AS50510 | Other Business | 4 | 0 | Cancer Research UK |
| AS50807 | Other Business | 4 | 0 | Inspiretec LTD |
| AS51318 | Other Business | 4 | 0 | STANDARD CHARTERED BANK |
| AS51545 | Hosting Provider | 4 | 0 | zsah Limited |
| AS51551 | Other Business | 4 | 0 | Capita Business Services Ltd |
| AS56540 | Other Business | 4 | 0 | BITNIFTY LTD |
| AS58349 | Other Business | 4 | 0 | Elna Paulette Valentin trading as INNETRA PC |
| AS60015 | Other Business | 4 | 0 | Codestone Solutions Limited |
| AS60825 | Other Business | 4 | 0 | CLOUD SG UK LTD |
| AS60885 | Other Business | 4 | 0 | Zengenti Ltd. |
| AS61419 | Hosting Provider | 4 | 0 | The Cloud Simplified Limited |
| AS62145 | Other Business | 4 | 0 | BANGO.NET Ltd |
| AS62224 | Other Business | 4 | 0 | Bullhorn, International Limited |
| AS6759 | ISP & Mobile | 4 | 0 | Pelion IoT Limited |
| AS8669 | Hosting Provider | 4 | 0 | Total Web Solutions Ltd |
| AS8942 | Other Business | 4 | 0 | Costar UK Limited |
| AS8952 | Other Business | 4 | 0 | NTT United Kingdom Ltd |
| AS214480 | Other Business | 3 | 30 | Innova Communications Limited |
| AS213618 | Other Business | 3 | 19 | ONESHOME COMMUNICATIONS LTD |
| AS204921 | Other Business | 3 | 9 | zhenyun sun |
| AS206924 | Other Business | 3 | 8 | Ben Cartwright-Cox |
| AS213482 | Other Business | 3 | 7 | Waterfall Technologies Ltd |