| Business | Phone |
| Cyber Tech Investigative Svc 2218 Jackson Blvd # 3, Rapid City 57702 | (605) 343-9042 |
| Scout Investigations Llc 703 Main St, Rapid City 57701 | (605) 343-0889 |
| Discovery Investigation Svc 2040 W Main St, Rapid City 57702 | (605) 343-8335 |
| Professional Investigative Po Box 8151, Rapid City 57709 | (605) 343-2885 |
| Phoenix Investigations 703 4th St, Rapid City 57701 | (605) 343-5258 |
| Investigative Services Co 2112 3rd St, Rapid City 57701 | (605) 342-3578 |
| Kolbach & Assoc 227 E Saint Joseph St, Rapid City 57701 | (605) 348-6602 |