| Business | Phone |
| Weidner & Assoc Inc 209 S High St # 309, Columbus 43215 | (614) 228-1100 |
| Allstate Investigations Inc 5077 Olentangy River Rd, Columbus 43214 | (614) 538-8283 |
| Arthur's Investigations 2517 Minerva Lake Rd, Columbus 43231 | (614) 890-0688 |
| Super Sleuth Po Box 21365, Columbus 43221 | (614) 771-6449 |
| Boerger Investigative Svc 1350 W 5th Ave, Columbus 43212 | (614) 481-0777 |
| Buckeye Legal Investigations 3503 Alfred Ct, Columbus 43221 | (614) 595-7401 |
| Capital Consulting Svc Po Box 12156, Columbus 43212 | (614) 837-7916 |
| Colley Investigations Inc 480 S 3rd St, Columbus 43215 | (614) 224-4244 |
| Confidential Services 1156 Alum Creek Dr, Columbus 43209 | (614) 252-4646 |
| Powers Investigations 6814 Caine Rd, Columbus 43235 | (614) 793-1288 |
| Priority Investigations Assoc 5080 Sinclair Rd, Columbus 43229 | (614) 888-1141 |
| Private Detective Co Columbus 43220 | (614) 827-9800 |
| Pica Corp 551 S 3rd St, Columbus 43215 | (614) 228-7422 |
| Pack Parrish & Assoc Llc 50 W Broad St # 3100, Columbus 43215 | (614) 221-6918 |
| Elite Security & Investigation 2002 W Whittier Ave, Columbus 43215 | (614) 539-4360 |
| Evidence Research Svc 458 Arden Rd, Columbus 43214 | (614) 267-4945 |
| Finders Keepers Columbus 43212 | (614) 778-6139 |
| Montgomery Security 51 N High St, Columbus 43215 | (614) 232-8884 |
| General Corporate Invstgtn Columbus 43220 | (614) 326-1199 |
| Martin D Yant Investigations 1000 Urlin Ave # 1821, Columbus 43212 | (614) 481-1941 |
| L C Severson Co 6515 Red Fern Pl, Columbus 43229 | (614) 890-6611 |
| Infocorp Investigative Svc Columbus 43219 | (614) 989-7584 |
| International Security Assoc 1660 Nw Professional Plz # F, Columbus 43220 | (614) 326-3626 |
| Investigation Protection Agcy 4281 Donlyn Ct, Columbus 43232 | (614) 861-8840 |
| Investigation Protection Rcvry 5197 Trabue Rd, Columbus 43228 | (614) 488-8200 |