| Business | Phone |
| Sierra Systems Consultants Inc 433 Las Colinas Blvd E, Irving 75039 | (972) 556-2121 |
| Lee Farish Computer Svc 1915 Peters Rd, Irving 75061 | (972) 438-5752 |
| Uunet 2221 Reid Dr, Irving 75061 | (972) 579-1005 |
| Fiserv Inc Irving 75039 | (972) 401-6000 |
| Computer Sciences Corp 8616 Freeport Pkwy, Irving 75063 | (469) 499-8000 |
| Imaged Data 3150 Premier Dr 120, Irving 75063 | (972) 751-0431 |
| Ncr Corp 450 E John Carpenter Fwy, Irving 75062 | (972) 650-2100 |
| Proquest Recruiting & Contract Irving 75063 | (972) 506-7021 |
| Tri Zetto Group Inc 2801 Gateway Dr 140, Irving 75063 | (972) 536-8240 |