| GB | AS207120 | Quickline Communications Limited |
| GB | AS213000 | Alliance Medical Limited |
| GB | AS21470 | South West Communications Group |
| GB | AS205900 | APC Solutions UK Ltd |
| US | AS14931 | The St. Paul Travelers Companies, Inc. |
| US | AS32906 | FACTORY MUTUAL INSURANCE COMPANY |
| GB | AS213885 | Wilxite Ltd |
| GB | AS47622 | Datatech UK Ltd |
| GB | AS51953 | Sagentia Ltd |
| GB | AS50078 | X-ON |
| US | AS22992 | SecureWorks Corp |
| GB | AS44521 | Jagex Limited |
| IT | AS202679 | Deltatre Limited |
| GB | AS15914 | British Airways plc |
| DE | AS211820 | Evotec SE |
| GB | AS201358 | FNZ (UK) Ltd |
| GB | AS44008 | Royal Borough of Kensington and Chelsea |
| GB | AS206576 | Wavenet Limited - AS206576 |
| GB | AS208118 | NI-Technology-Ltd |
| GB | AS39461 | EDF Energy Nuclear Generation Group Ltd |
| GB | AS212880 | Krypton IT |
| EU | AS1290 | Telstra International (PSINet UK) |
| US | AS19305 | Transaction Network Services, Inc. |
| GB | AS204550 | Continental Limited |
| GB | AS28939 | ARM |
| GB | AS210988 | London Borough Of Hammersmith & Fulham |
| GB | AS39382 | Optinium Ltd |
| GB | AS41383 | Wolseley UK Limited |
| GB | AS49318 | TELEFONICA TECH UK MANAGED SERVICES LTD |
| US | AS397010 | Dice Lion Technology |
| US | AS22787 | ARRIS Enterprises LLC |
| US | AS18930 | Dow Corning |
| GB | AS207916 | Velocity1 Limited |
| GB | AS209761 | NECS |
| NL | AS60142 | NXP Semiconductors Netherlands B.V. |
| GB | AS49324 | Nottingham City Council |
| FR | AS211124 | CGI-UK-AS |
| GB | AS205693 | Driver & Vehicle Licensing Agency |
| GB | AS33879 | Forth Ports Public Limited Company |
| GB | AS210511 | Direct Market Solutions Limited |
| NL | AS209258 | TSYS Europe (Netherlands) B.V. |
| GB | AS204322 | New York Times Limited |
| GB | AS39400 | London Borough of Hackney |
| CA | AS397681 | CGI Inc. |
| GB | AS202783 | NHS National Services Scotland |
| GB | AS43838 | City of Bradford Metropolitan District |
| GB | AS197104 | Gentoo Group Limited |
| GB | AS204486 | Cheshire East Council |
| US | AS63112 | Service-now.com |
| US | AS19738 | Assurant, Inc. |
