| GB | AS34099 | Road Tech Computer Systems Ltd. |
| US | AS32906 | FACTORY MUTUAL INSURANCE COMPANY |
| RU | AS203749 | O2 Cloud, LLC |
| GB | AS47999 | Verint Systems UK Ltd |
| GB | AS197107 | SERVICE EXPRESS EUROPE LIMITED |
| GB | AS205693 | Driver & Vehicle Licensing Agency |
| GB | AS39103 | Moat Homes |
| GB | AS47622 | Datatech UK Ltd |
| GB | AS208895 | Intelligence Hosting Services Limited |
| US | AS16491 | ViaSat, Inc. |
| GB | AS210511 | Direct Market Solutions Limited |
| GB | AS210988 | London Borough Of Hammersmith & Fulham |
| CA | AS49707 | TESSAWORKS |
| GB | AS207120 | Quickline Communications Limited |
| GB | AS212880 | Krypton IT |
| GB | AS62364 | Plymouth City Council |
| GB | AS39382 | Optinium Ltd |
| GB | AS204322 | New York Times Limited |
| GB | AS8669 | Total Web Solutions Ltd |
| GB | AS39461 | EDF Energy Nuclear Generation Group Ltd |
| GB | AS206324 | Stellium Networks (UK) |
| US | AS16525 | KBR |
| GB | AS207916 | Velocity1 Limited |
| GB | AS196778 | TFL |
| GB | AS202783 | NHS National Services Scotland |
| GB | AS203185 | PEBBLETREE LTD |
| GB | AS213885 | Wilxite Ltd |
| GB | AS60819 | Safenames Ltd. |
| GB | AS60914 | Telecoms Consortium Ltd. |
| GB | AS203652 | IBM United Kingdom Limited |
| GB | AS43838 | City of Bradford Metropolitan District |
| NL | AS209258 | TSYS Europe (Netherlands) B.V. |
| FR | AS211124 | CGI-UK-AS |
| GB | AS49324 | Nottingham City Council |
| GB | AS41362 | Royal London Management Services Limited |
| US | AS19738 | Assurant, Inc. |
| GB | AS204045 | Compass Plus (Great Britain) Limited |
| US | AS22992 | SecureWorks Corp |
| US | AS14931 | The St. Paul Travelers Companies, Inc. |
| GB | AS206576 | Wavenet Limited - AS206576 |
| GB | AS35707 | Scottish Power UK PLC |
| GB | AS50078 | X-ON |
| EU | AS1290 | Telstra International (PSINet UK) |
| GB | AS49318 | TELEFONICA TECH UK MANAGED SERVICES LTD |
| GB | AS205900 | APC Solutions UK Ltd |
| GB | AS209997 | SECURITAS TECHNOLOGY LIMITED |
| GB | AS199675 | Willis Group Services Ltd |
| GB | AS47534 | VOCALINK LTD |
| GB | AS209761 | NECS |
| US | AS33680 | TELEPERFORMANCE-USA |