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 |
|---|---|---|---|---|
| AS198690 | ISP & Mobile | 6 | 0 | Fibrecast Ltd. |
| AS200636 | Other Business | 6 | 0 | Paravirt LTD |
| AS201714 | Other Business | 6 | 0 | Link IP Networks Ltd |
| AS203177 | Other Business | 6 | 0 | BCS Global Networks Limited |
| AS203818 | Other Business | 6 | 0 | Marshall Wace Asset Management Ltd |
| AS203851 | ISP & Mobile | 6 | 0 | CSD Network Services Ltd |
| AS204592 | ISP & Mobile | 6 | 0 | Cosmos Wireless Ltd |
| AS206629 | Government | 6 | 0 | Ministry of Justice |
| AS210980 | Other Business | 6 | 0 | MANTA TECH LTD |
| AS211091 | Hosting Provider | 6 | 0 | I P House Limited |
| AS21439 | Other Business | 6 | 0 | Morgan Stanley & Co. International PLC |
| AS21459 | Other Business | 6 | 0 | OneAdvanced It Services Limited |
| AS215089 | Hosting Provider | 6 | 0 | Fast Panda Limited |
| AS24949 | Other Business | 6 | 0 | AXA Technology Services UK Limited |
| AS29664 | ISP & Mobile | 6 | 0 | Flag Telecom UK Limited |
| AS30933 | Hosting Provider | 6 | 0 | KDA WEB SERVICES LTD |
| AS33970 | ISP & Mobile | 6 | 0 | M247 Ltd |
| AS35831 | Hosting Provider | 6 | 0 | Vnetrix Ltd |
| AS43108 | Hosting Provider | 6 | 0 | GARMTECH LP |
| AS43534 | Other Business | 6 | 0 | Network Merchants Limited |
| AS44226 | Other Business | 6 | 0 | Acturis Ltd |
| AS44371 | Other Business | 6 | 0 | Paypoint Network Limited |
| AS44706 | ISP & Mobile | 6 | 0 | Monty UK Global Limited |
| AS47625 | Other Business | 6 | 0 | Paul David Hughes |
| AS48549 | Other Business | 6 | 0 | Bringo Group Ltd |
| AS50023 | Other Business | 6 | 0 | VCG TECHNOLOGY SERVICES LIMITED |
| AS50422 | Other Business | 6 | 0 | Natwest Markets PLC |
| AS50948 | Other Business | 6 | 0 | AMDOCS (UK) LIMITED |
| AS206499 | Other Business | 5 | 26 | LOCIX LIMITED |
| AS210667 | Other Business | 5 | 18 | Adam Goodenough |
| AS50224 | Other Business | 5 | 13 | MTRL GROUP LIMITED |
| AS205373 | Other Business | 5 | 5 | Rightmove Group Limited |
| AS206300 | Other Business | 5 | 4 | YUNYOO LTD |
| AS25048 | Hosting Provider | 5 | 4 | DSNET Ltd |
| AS201949 | Other Business | 5 | 3 | Seed Technologies LTD. |
| AS41495 | Hosting Provider | 5 | 3 | Faelix Limited |
| AS42909 | Hosting Provider | 5 | 3 | Community DNS Limited |
| AS43355 | Other Business | 5 | 3 | GATWICK AIRPORT LIMITED |
| AS197898 | ISP & Mobile | 5 | 2 | Integrated Digital Services Ltd |
| AS198864 | Education | 5 | 2 | Queen Mary University of London |
| AS199456 | Other Business | 5 | 2 | VALID TECHNOLOGY L.P. |
| AS199468 | ISP & Mobile | 5 | 2 | GRAIN COMMUNICATIONS LIMITED |
| AS199710 | Other Business | 5 | 2 | DAZN MEDIA SERVICES LIMITED |
| AS202312 | Other Business | 5 | 2 | SMBC Bank International plc |
| AS205719 | Other Business | 5 | 2 | FORESTSNET LTD |
| AS215759 | Other Business | 5 | 2 | Ziax Ltd |
| AS48704 | Other Business | 5 | 2 | Freshwave Services Limited |
| AS60610 | Hosting Provider | 5 | 2 | Amito Ltd |
| AS196674 | Other Business | 5 | 1 | Speedflow Communications Ltd |
| AS196881 | ISP & Mobile | 5 | 1 | Liberty-izone Ltd |
| AS198895 | Other Business | 5 | 1 | Techade Ltd |
| AS199856 | Other Business | 5 | 1 | Ping Technology Labs LTD |
| AS209082 | Other Business | 5 | 1 | Swlines Ltd |
| AS209594 | Other Business | 5 | 1 | IGC Technical Solutions Ltd |
| AS21130 | Hosting Provider | 5 | 1 | IOMART CLOUD SERVICES LIMITED |
| AS212633 | ISP & Mobile | 5 | 1 | EE Mobile Telecom Ltd |
| AS212701 | Hosting Provider | 5 | 1 | Hostinux Limited |
| AS213001 | Other Business | 5 | 1 | LA5 Digital LTD |
| AS25108 | Hosting Provider | 5 | 1 | Iomart Managed Services Limited |
| AS35327 | Hosting Provider | 5 | 1 | Naglotech Limited |
| AS39767 | Other Business | 5 | 1 | Sargasso N1 Limited |
| AS41489 | Hosting Provider | 5 | 1 | Watchfront Limited |
| AS51031 | Other Business | 5 | 1 | w1n ltd |
| AS51059 | Hosting Provider | 5 | 1 | Brightbox Systems Ltd |
| AS51945 | Hosting Provider | 5 | 1 | Enlink Ltd |
| AS57653 | Other Business | 5 | 1 | Central Technology Ltd |
| AS60255 | ISP & Mobile | 5 | 1 | Internetty Ltd |
| AS6717 | ISP & Mobile | 5 | 1 | Internet Central Limited |
| AS8419 | Hosting Provider | 5 | 1 | Redcentric Solutions Ltd |
| AS8622 | Hosting Provider | 5 | 1 | TEAM BLUE INTERNET SERVICES UK LIMITED |
| AS8902 | Other Business | 5 | 1 | CCS Connectivity Limited |
| AS16032 | Hosting Provider | 5 | 0 | The Internet Business Ltd |
| AS16197 | Other Business | 5 | 0 | Innovanti Limited |
| AS198362 | Hosting Provider | 5 | 0 | NETH LTD |
| AS198823 | Government | 5 | 0 | Network Integration Technologies LTD |
| AS199675 | Other Business | 5 | 0 | Willis Group Services Ltd |
| AS200700 | ISP & Mobile | 5 | 0 | BMC TV LTD |
| AS201542 | Other Business | 5 | 0 | Mitel Networks Limited |
| AS202466 | Other Business | 5 | 0 | QBE Management Services (UK) Limited |
| AS203154 | Hosting Provider | 5 | 0 | MITELIS SECURITY LIMITED |
| AS203258 | Other Business | 5 | 0 | UCNS Limited |
| AS204103 | ISP & Mobile | 5 | 0 | Comms West Limited |
| AS204670 | Other Business | 5 | 0 | NTT United Kingdom Ltd |
| AS205114 | Other Business | 5 | 0 | The WEST Retail group LImited |
| AS205826 | Other Business | 5 | 0 | CONTENTHOST LIMITED |
| AS206232 | ISP & Mobile | 5 | 0 | Acuity Unified Communications Limited |
| AS206245 | ISP & Mobile | 5 | 0 | Subset Solutions UK Limited |
| AS206352 | ISP & Mobile | 5 | 0 | Media Connective LLP |
| AS206733 | Hosting Provider | 5 | 0 | Beeks Financial Cloud Ltd |
| AS207087 | Other Business | 5 | 0 | Pay360 Ltd |
| AS207310 | Other Business | 5 | 0 | Cinos Communications Services Limited |
| AS207765 | Other Business | 5 | 0 | Transit Networks Limited |
| AS207916 | Other Business | 5 | 0 | Velocity1 Limited |
| AS208507 | Other Business | 5 | 0 | Mitsubishi HC Capital UK PLC |
| AS208697 | Other Business | 5 | 0 | Kellogg Management Services (Europe) Limited |
| AS210757 | Other Business | 5 | 0 | Blackbird Solutions Limited |
| AS211121 | Other Business | 5 | 0 | Tiger Network Limited |
| AS211126 | Hosting Provider | 5 | 0 | WHG Hosting Services Ltd |
| AS211167 | Other Business | 5 | 0 | IT Farm Limited |
| AS211844 | Other Business | 5 | 0 | Southern Water Services Ltd |