| Business | Phone |
| A L Corporate Investigations 1454 10th St # 102, Des Moines 50314 | (515) 321-2935 |
| Ace Investigations Po Box 131, Des Moines 50301 | (515) 265-4030 |
| Answers Private Investigations Des Moines 50310 | (515) 669-2507 |
| Maynes-Thomas & Assoc 4107 47th St, Des Moines 50310 | (515) 252-0885 |
| Gratias Investigators Inc 505 5th Ave 1050, Des Moines 50309 | (515) 244-9817 |
| Hamby's Limited 123 E Kirkwood Ave, Des Moines 50315 | (515) 243-1569 |
| Ideal Investigations 511 E 6th St, Des Moines 50309 | (515) 288-1814 |
| Investigative Services Inc 3304 Crescent Dr, Des Moines 50312 | (515) 255-0569 |
| J R Investigations Po Box 4175, Des Moines 50333 | (515) 288-4682 |
| James Mazour Investigations 5601 Hickman Rd, Des Moines 50310 | (515) 279-8383 |
| Scott's Limited Des Moines 50309 | (515) 243-1569 |
| David Stuart 3303 Elmwood Dr, Des Moines 50312 | (515) 249-2733 |