| Business | Phone |
| Altus Investigative Svc 2319 Market Pl Sw # D, Huntsville 35801 | (256) 551-7944 |
| Fore Investigations 6225 Maywick Dr Nw, Huntsville 35810 | (256) 759-9043 |
| Huntsville Investigations 1935 Meadowbrook Dr Sw # 1703, Huntsville 35803 | (256) 883-9490 |