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 |
|---|---|---|---|---|
| AS201289 | Other Business | 1 | 0 | COMMIFY UK LIMITED |
| AS201375 | Other Business | 1 | 0 | Datazero Ltd. |
| AS201433 | Other Business | 1 | 0 | WISCOL LIMITED |
| AS201497 | Other Business | 1 | 0 | STAT EXPRESS SERVICES LTD |
| AS201676 | Other Business | 1 | 0 | WAGHORN CAPITAL CO LTD |
| AS201694 | Other Business | 1 | 0 | Rethink Technology Solutions Ltd |
| AS201738 | Other Business | 1 | 0 | UFO TECHNOLOGIES LIMITED |
| AS201830 | Other Business | 1 | 0 | Eternity Cloud Limited |
| AS201831 | Other Business | 1 | 0 | ActivTrades Plc. |
| AS201854 | ISP & Mobile | 1 | 0 | Octopus Telecom Ltd |
| AS201903 | Other Business | 1 | 0 | Evorio Limited |
| AS202141 | Other Business | 1 | 0 | Warren Hall |
| AS202241 | Other Business | 1 | 0 | Business Design Centre Ltd |
| AS202264 | Hosting Provider | 1 | 0 | DMESG ICT Ltd |
| AS202363 | Other Business | 1 | 0 | R.J. OBrien Limited |
| AS202529 | Other Business | 1 | 0 | CDW Ltd |
| AS202532 | ISP & Mobile | 1 | 0 | Mbytechnology Limited |
| AS202575 | Education | 1 | 0 | University of Hull |
| AS202587 | Other Business | 1 | 0 | C2C Ltd |
| AS202783 | Government | 1 | 0 | NHS National Services Scotland |
| AS202791 | Hosting Provider | 1 | 0 | Clouvider Limited |
| AS202792 | Hosting Provider | 1 | 0 | Clouvider Limited |
| AS202808 | ISP & Mobile | 1 | 0 | Blairlogie Community and Heritage Trust |
| AS203064 | Other Business | 1 | 0 | Purple Computing Limited |
| AS203108 | Other Business | 1 | 0 | iTouch Vision LTD |
| AS203109 | Other Business | 1 | 0 | AeroFibre Ltd |
| AS203113 | Other Business | 1 | 0 | BlueWave Fibre Ltd |
| AS203128 | Other Business | 1 | 0 | NEWCASTLE STRATEGIC SOLUTIONS LIMITED |
| AS203133 | Other Business | 1 | 0 | Optimas OE Solutions LTD |
| AS203231 | Other Business | 1 | 0 | Vanquish Global Trading Ltd |
| AS203251 | Hosting Provider | 1 | 0 | Alchemy Systems International Limited |
| AS203253 | Other Business | 1 | 0 | Cherrytop Ltd |
| AS203403 | Other Business | 1 | 0 | Flextel Limited |
| AS203452 | Other Business | 1 | 0 | Swarco UK & Ireland Ltd |
| AS203573 | Other Business | 1 | 0 | Tailor Made Technologies Ltd |
| AS203582 | Other Business | 1 | 0 | M-Tech Systems Ltd |
| AS204018 | ISP & Mobile | 1 | 0 | Cityfibre Limited |
| AS204045 | Other Business | 1 | 0 | Compass Plus (Great Britain) Limited |
| AS204097 | Other Business | 1 | 0 | IQVIA LTD. |
| AS204220 | Hosting Provider | 1 | 0 | Star Europe Limited |
| AS204222 | Government | 1 | 0 | His Majesty's Revenue and Customs |
| AS204236 | Other Business | 1 | 0 | Daniel Ionita |
| AS204247 | Other Business | 1 | 0 | Asda Stores Limited |
| AS204264 | Other Business | 1 | 0 | Pure IP Limited |
| AS204322 | Other Business | 1 | 0 | New York Times Limited |
| AS204387 | Other Business | 1 | 0 | Evolution Gaming LTD |
| AS204414 | Other Business | 1 | 0 | The OxFORD Asset Management Company Limited |
| AS204486 | ISP & Mobile | 1 | 0 | Cheshire East Council |
| AS204519 | Other Business | 1 | 0 | SL029315 LP |
| AS204767 | Other Business | 1 | 0 | VIRTUAL PRIVATE SERVER DATACENTER LIMITED |
| AS204821 | ISP & Mobile | 1 | 0 | Sinofibre Limited |
| AS204826 | Other Business | 1 | 0 | North Rock Capital Management (UK) LLP |
| AS204942 | Other Business | 1 | 0 | MIFINORX LTD |
| AS205011 | Other Business | 1 | 0 | Celer Technologies Limited |
| AS205177 | Other Business | 1 | 0 | IVANTI UK LIMITED |
| AS205197 | Other Business | 1 | 0 | Kanta Enterprises Ltd |
| AS205200 | Other Business | 1 | 0 | BOLDYN NETWORKS UK LIMITED |
| AS205237 | Other Business | 1 | 0 | SAVILLS PLC |
| AS205372 | Other Business | 1 | 0 | Evrocom.uk Limited trading as Fiber Zone |
| AS205492 | Other Business | 1 | 0 | Schroder Investment Management Limited |
| AS205517 | ISP & Mobile | 1 | 0 | Highland Community Broadband C.I.C. |
| AS205599 | Other Business | 1 | 0 | A.B.F.HOLDINGS LIMITED |
| AS205615 | Other Business | 1 | 0 | SS&C Solution Limited |
| AS205676 | Other Business | 1 | 0 | Data Center Experts LTD |
| AS205767 | Other Business | 1 | 0 | Spectron Services Limited |
| AS205772 | Other Business | 1 | 0 | LARMITGTOP LTD |
| AS205855 | Other Business | 1 | 0 | Evolution Gaming LTD |
| AS205918 | Other Business | 1 | 0 | VERTIV COMPANY GROUP LIMITED |
| AS205936 | Hosting Provider | 1 | 0 | COULD IT HOSTING LIMITED |
| AS206062 | Hosting Provider | 1 | 0 | Space Data Centres Ltd |
| AS206071 | Other Business | 1 | 0 | Electronic Arts Limited |
| AS206136 | Hosting Provider | 1 | 0 | Clouvider Limited |
| AS206146 | Other Business | 1 | 0 | PAYSEND TECHNOLOGY LIMITED |
| AS206457 | Other Business | 1 | 0 | Electronic Arts Limited |
| AS206512 | Hosting Provider | 1 | 0 | TIGOVA NETWORK LIMITED |
| AS206530 | ISP & Mobile | 1 | 0 | VOXYONDER NETWORK SERVICES UK LTD |
| AS206573 | Other Business | 1 | 0 | London Systems UK Limited |
| AS206664 | Other Business | 1 | 0 | FLEXTRADE UK LIMITED |
| AS206681 | Other Business | 1 | 0 | Ivista Limited |
| AS206682 | Other Business | 1 | 0 | LIMA Networks Limited |
| AS206773 | Other Business | 1 | 0 | MSX International Ltd |
| AS206800 | Other Business | 1 | 0 | Electronic Arts Limited |
| AS206933 | Other Business | 1 | 0 | NSC Global Limited |
| AS206974 | Other Business | 1 | 0 | Laldy Ltd |
| AS207245 | Other Business | 1 | 0 | DSTI Holdings Limited |
| AS207273 | Other Business | 1 | 0 | Pharoah Tools Limited |
| AS207295 | Hosting Provider | 1 | 0 | Akhtar Technologies Limited |
| AS207536 | Other Business | 1 | 0 | SEABECK SOLUTIONS LIMITED |
| AS207549 | Other Business | 1 | 0 | TheFinnaCompany Ltd |
| AS207552 | Other Business | 1 | 0 | Cambridge Consultants Limited |
| AS207601 | Other Business | 1 | 0 | Electronic Arts Limited |
| AS207673 | Other Business | 1 | 0 | Perform Content Services Limited |
| AS207734 | Other Business | 1 | 0 | COMMERCIS ME LTD |
| AS208098 | Other Business | 1 | 0 | THREDD UK LIMITED |
| AS208123 | Other Business | 1 | 0 | SPN Alliance Limited |
| AS208150 | Other Business | 1 | 0 | Eagle Aquila Ltd |
| AS208180 | Other Business | 1 | 0 | Bluecube Cyber Security Solutions Limited |
| AS208307 | Other Business | 1 | 0 | SECONDMIND LIMITED |
| AS208311 | Other Business | 1 | 0 | Bourne Leisure Limited |
| AS20832 | Other Business | 1 | 0 | Southern Communications Ltd |