| US | AS16525 | KBR |
| GB | AS203652 | IBM United Kingdom Limited |
| GB | AS49318 | TELEFONICA TECH UK MANAGED SERVICES LTD |
| GB | AS205654 | Labtech Systems Ltd |
| GB | AS21470 | South West Communications Group |
| CA | AS397681 | CGI Inc. |
| GB | AS47534 | VOCALINK LTD |
| GB | AS205693 | Driver & Vehicle Licensing Agency |
| GB | AS44403 | Bristol City Council |
| GB | AS199675 | Willis Group Services Ltd |
| US | AS6254 | EG&G, Inc. |
| GB | AS8296 | HBVB Private Unlimited |
| GB | AS33879 | Forth Ports Public Limited Company |
| GB | AS44521 | Jagex Limited |
| GB | AS204777 | telent Technology Services Ltd |
| GB | AS15770 | Durham County Council |
| GB | AS204045 | Compass Plus (Great Britain) Limited |
| GB | AS39730 | Eircom (UK) Ltd |
| GB | AS60187 | London Grid for Learning Trust |
| GB | AS50203 | Reynolds and Reynolds Limited |
| GB | AS207173 | Northrop Grumman UK Limited |
| GB | AS51766 | Merseyside Fire and Rescue Service |
| GB | AS204322 | New York Times Limited |
| GB | AS25546 | Brookland Computer Services Limited |
| GB | AS213000 | Alliance Medical Limited |
| GB | AS8336 | THE INNOVATION GROUP (EMEA) LTD |
| GB | AS39461 | EDF Energy Nuclear Generation Group Ltd |
| GB | AS39341 | Acxiom U.K. Limited |
| US | AS19738 | Assurant, Inc. |
| GB | AS39103 | Moat Homes |
| NL | AS209258 | TSYS Europe (Netherlands) B.V. |
| GB | AS41362 | Royal London Management Services Limited |
| GB | AS209997 | SECURITAS TECHNOLOGY LIMITED |
| US | AS16491 | ViaSat, Inc. |
| GB | AS56929 | WANDSWORTH-BOROUGH-COUNCIL |
| GB | AS41383 | Wolseley UK Limited |
| US | AS18930 | Dow Corning |
| GB | AS206467 | Protech Communications Ltd |
| GB | AS204486 | Cheshire East Council |
| GB | AS211844 | Southern Water Services Ltd |
| GB | AS34344 | Port Of Tilbury London Ltd |
| GB | AS208118 | NI-Technology-Ltd |
| GB | AS50985 | Electronic Arts Limited |
| GB | AS206773 | MSX International Ltd |
| GB | AS202783 | NHS National Services Scotland |
| GB | AS42359 | The Football Association Ltd. |
| GB | AS44008 | Royal Borough of Kensington and Chelsea |
| NL | AS60142 | NXP Semiconductors Netherlands B.V. |
| US | AS203483 | Garmin International, Inc. |
| RU | AS203749 | O2 Cloud, LLC |
