Colbert Public School Authorized Investment Providers For specific investment provider information, please click on the investment provider name of your choice to visit the company's website. 403(b) American Fidelity Assurance Co.(800) 654-8489 Horace Mann Insurance Company(800) 999-1030 National Life Group(800) 579-2878 ReliaStar Life - Subsidiary of VOYA Financial(877) 882-5050