| Business | Phone |
| Professional Networks 743 Spirit 40 Park Dr # 112, Chesterfield 63005 | (636) 519-4808 |
| Priemer Networks 16690 Swingley Ridge Rd, Chesterfield 63017 | (636) 728-1650 |
| Integrated Network Cable 18079 Edison Ave, Chesterfield 63005 | (636) 519-9505 |
| Foundry Networks Intl 400 Chesterfield Ctr, Chesterfield 63017 | (636) 537-7828 |
| Eframe Technology Chesterfield 63005 | (636) 536-9555 |
| Cisco Systems Inc 400 S Woods Mill Rd, Chesterfield 63017 | (636) 628-5600 |
| Commercequest 16141 Swingley Ridge Rd, Chesterfield 63017 | (636) 519-7311 |