| Business | Phone |
| Manufacturers Clearing House 4875 N Elston Ave, Chicago 60630 | (773) 685-8033 |
| Merritt Credit Bureau 549 W Randolph St 405, Chicago 60661 | (312) 781-9303 |
| Trans Union 555 W Adams St, Chicago 60661 | (312) 408-1077 |
| Old Republic Credit 29 E Madison St, Chicago 60602 | (312) 551-0300 |
| Thomas Reports 209 W Jackson Blvd, Chicago 60606 | (312) 427-7582 |
| Relydata 3700 N Kildare Ave 3, Chicago 60641 | (312) 661-0096 |
| Metro-Western Cook Credit Svc 4409 W Lawrence Ave, Chicago 60630 | (773) 777-5557 |
| Transunion 555 W Adams St, Chicago 60661 | (312) 798-6728 |
| Credit Repair Chicago 225 W Washington St, Chicago 60606 | (312) 205-8496 |