| Business | Phone |
| Background Information Svc Valparaiso 46383 | (219) 531-4200 |
| Hyten Investigative Svc 61 Indiana Ave # A, Valparaiso 46383 | (219) 531-6531 |
| Mrd Investigations Inc Valparaiso 46383 | (219) 464-2170 |
| Rst Investigations Po Box 11, Valparaiso 46384 | (219) 531-1060 |