Equifax: A national credit reporting agency. 800-685-1111

Experian: A national credit reporting agency. 888-397-3742

National Association of Realtors: Composed of local association and Realtor boards; has a large library. 800-874-6500

National Apartment Association: A national screening company. 703-518-6141

National Tenant Network: Will let you screen prospective tenants and receive online tenant performance reports.

RentGrow: Its offices throughout the U.S. offer screening services. 800-736-8479

Tenant Screening Credit: A national screening company and credit reporting bureau open all the time. 800-523-2381

TransUnion: A national credit reporting agency. 800-888-4213