| Business | Phone |
| Control Systems Software 4440 114th St, Urbandale 50322 | (515) 270-1844 |
| Csi Computer Svc 4725 Merle Hay Rd 101, Urbandale 50322 | (515) 270-8182 |
| Selective Data Svc Urbandale 50322 | (515) 331-1122 |
| Tridaq Inc 11001 Aurora Ave, Urbandale 50322 | (515) 331-8977 |