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 |
|---|---|---|---|---|
| AS6908 | Hosting Provider | 42 | 6 | Six Degrees Technology Group Limited |
| AS49683 | Hosting Provider | 42 | 1 | MASSIVEGRID LTD |
| AS41354 | ISP & Mobile | 41 | 3 | ITS Technology Group Limited |
| AS48254 | Hosting Provider | 40 | 14 | 20i Limited |
| AS50300 | Hosting Provider | 40 | 8 | CustodianDC Limited |
| AS64080 | Hosting Provider | 40 | 4 | SYN LTD |
| AS204339 | Hosting Provider | 40 | 2 | FIRST SERVER LIMITED |
| AS48945 | ISP & Mobile | 40 | 2 | OPEN FIBRE NETWORKS (WHOLESALE) LIMITED |
| AS5503 | Other Business | 40 | 1 | RM Education Ltd |
| AS199550 | Other Business | 40 | 0 | HIRAGI LTD |
| AS43009 | Other Business | 39 | 2 | Infobip Limited |
| AS215703 | Hosting Provider | 39 | 1 | FREAKHOSTING LTD |
| AS29668 | Hosting Provider | 38 | 3 | vXtream Ltd |
| AS56595 | Other Business | 38 | 2 | Commsworld Ltd |
| AS51809 | ISP & Mobile | 38 | 1 | BRSK Limited |
| AS49758 | Other Business | 38 | 0 | Lloyds Banking Group PLC |
| AS31463 | Hosting Provider | 37 | 5 | Redcentric Solutions Ltd |
| AS47890 | Other Business | 37 | 4 | UNMANAGED LTD |
| AS212655 | ISP & Mobile | 37 | 3 | YouFibre Limited |
| AS13037 | ISP & Mobile | 37 | 1 | Zen Internet Ltd |
| AS14670 | Hosting Provider | 37 | 0 | WHG Hosting Services Ltd |
| AS198550 | Hosting Provider | 37 | 0 | NODE HOST LIMITED |
| AS50292 | Other Business | 37 | 0 | Access UK Ltd |
| AS31655 | Other Business | 36 | 3 | Gamma Telecom Holdings Ltd |
| AS35575 | ISP & Mobile | 36 | 2 | Vaioni Group Ltd |
| AS200876 | ISP & Mobile | 36 | 0 | Evolving Networks Limited |
| AS215152 | ISP & Mobile | 35 | 17 | CATERING UK LIMITED |
| AS60439 | Hosting Provider | 35 | 6 | SERVERNET INTERNET LIMITED |
| AS207158 | Hosting Provider | 35 | 0 | Clouvider Limited |
| AS47264 | Hosting Provider | 34 | 3 | Iomart Managed Services Limited |
| AS201002 | Hosting Provider | 33 | 4 | PebbleHost Ltd |
| AS215730 | Hosting Provider | 33 | 4 | H2NEXUS LTD |
| AS206347 | ISP & Mobile | 33 | 0 | Wessex Internet Limited |
| AS57356 | ISP & Mobile | 33 | 0 | Highland Network Ltd |
| AS198781 | Other Business | 32 | 1 | Connect Managed Services (UK) Limited |
| AS209341 | Hosting Provider | 32 | 0 | WHG Hosting Services Ltd |
| AS49592 | ISP & Mobile | 31 | 3 | Pipe Networks LTD |
| AS56329 | ISP & Mobile | 31 | 3 | Gigaclear Limited |
| AS5555 | ISP & Mobile | 31 | 1 | Sohonet Limited |
| AS12701 | Other Business | 31 | 0 | Barclays Bank plc |
| AS43519 | Other Business | 30 | 35 | Nominet UK |
| AS45014 | Hosting Provider | 30 | 6 | Nuco Technologies Ltd |
| AS200260 | Other Business | 30 | 2 | Debugged Ltd |
| AS203048 | Other Business | 30 | 0 | BritNeighbour Net Ltd |
| AS216047 | Other Business | 30 | 0 | INTECLOUD CDNK LTD |
| AS49318 | Other Business | 30 | 0 | TELEFONICA TECH UK MANAGED SERVICES LTD |
| AS51320 | ISP & Mobile | 30 | 0 | Wireless Logic Limited |
| AS213702 | Other Business | 29 | 6 | QWINS LTD |
| AS60064 | Hosting Provider | 29 | 6 | HOSTPALACE DATACENTERS LTD |
| AS39326 | Other Business | 29 | 4 | Syntura Group Limited |
| AS5631 | Other Business | 29 | 3 | Telcom Networks Limited |
| AS44356 | Hosting Provider | 29 | 2 | Epsilon Telecommunications Ltd |
| AS30967 | ISP & Mobile | 29 | 0 | TP Global Operations Limited |
| AS20705 | Other Business | 28 | 5 | HSBC Bank plc |
| AS31404 | ISP & Mobile | 28 | 3 | LYCATEL DISTRIBUTION UK LIMITED |
| AS207645 | ISP & Mobile | 28 | 1 | F & W Networks Ltd |
| AS205220 | Hosting Provider | 28 | 0 | RH & Co. IT Services Ltd |
| AS213840 | Other Business | 27 | 0 | DDOS PROTECTION LTD |
| AS41484 | ISP & Mobile | 26 | 1 | NYnet Ltd |
| AS16050 | Other Business | 26 | 0 | Refinitiv Limited |
| AS51713 | Hosting Provider | 26 | 0 | WHG Hosting Services Ltd |
| AS59395 | Other Business | 25 | 3 | Southern Communications Ltd |
| AS13009 | Hosting Provider | 25 | 2 | Redcentric Solutions Ltd |
| AS212286 | Other Business | 25 | 1 | LonConnect Ltd |
| AS24916 | ISP & Mobile | 25 | 1 | Orbital Net Ltd |
| AS25135 | ISP & Mobile | 25 | 1 | Vodafone Limited |
| AS207043 | Other Business | 25 | 0 | DEDIK SERVICES LIMITED |
| AS209888 | Other Business | 25 | 0 | Aeriandi Limited |
| AS34587 | Other Business | 25 | 0 | Hillside (Technology) Ltd |
| AS44307 | Other Business | 25 | 0 | MDSOL EUROPE LTD |
| AS59895 | Hosting Provider | 24 | 6 | Binary Racks Limited |
| AS51918 | ISP & Mobile | 24 | 2 | Cerberus Networks Ltd |
| AS201471 | Hosting Provider | 24 | 1 | Bigstep Cloud Limited |
| AS212027 | Hosting Provider | 24 | 1 | PebbleHost Ltd |
| AS32708 | Hosting Provider | 24 | 1 | LoadEdge Limited |
| AS51082 | Hosting Provider | 24 | 1 | A1 NETWORK EXCHANGE LIMITED |
| AS204139 | ISP & Mobile | 24 | 0 | NEXT GLOBAL SERVICES L.P. |
| AS207456 | ISP & Mobile | 24 | 0 | Pangea Connected Limited |
| AS25562 | Other Business | 24 | 0 | Sony Interactive Entertainment Europe Limited |
| AS48954 | Hosting Provider | 24 | 0 | AIMES Management Services Ltd |
| AS50889 | Other Business | 24 | 0 | NVIDIA Ltd |
| AS215355 | Hosting Provider | 23 | 23 | ALICE NETWORKS LTD |
| AS142594 | Hosting Provider | 23 | 14 | SpeedyPage Ltd |
| AS213734 | ISP & Mobile | 23 | 8 | ZERODESK LTD |
| AS12488 | Hosting Provider | 23 | 5 | Krystal Hosting Ltd |
| AS201971 | Hosting Provider | 23 | 4 | CreeperHost LTD |
| AS39537 | Other Business | 23 | 3 | SysGroup plc |
| AS60672 | Hosting Provider | 23 | 3 | ServerChoice Ltd |
| AS29107 | Other Business | 23 | 2 | Synapse Network LTD |
| AS31708 | Hosting Provider | 23 | 2 | Coreix Ltd |
| AS199283 | ISP & Mobile | 23 | 1 | STRUCTURED COMMUNICATIONS LIMITED |
| AS24958 | Other Business | 23 | 1 | CYBERFORT LIMITED |
| AS5378 | ISP & Mobile | 23 | 1 | Vodafone Limited |
| AS16224 | ISP & Mobile | 23 | 0 | Verizon UK Limited |
| AS204800 | Hosting Provider | 23 | 0 | WHG Hosting Services Ltd |
| AS212174 | ISP & Mobile | 23 | 0 | Jola Cloud Solutions Ltd |
| AS29197 | Other Business | 23 | 0 | Nomura International Plc |
| AS35425 | Hosting Provider | 22 | 4 | Iomart Managed Services Limited |
| AS213671 | ISP & Mobile | 22 | 2 | Vision Fibre Media LTD |
| AS199335 | ISP & Mobile | 22 | 1 | Talk Straight Ltd. |