Reference Data Rate Center Directory HILLMAN, MI Rate Center HILLMAN — MI Data last updated: March 10, 2026 LATA 344 State MI Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 45.05905850263988, -83.90116412788034 Area Codes 989 Top Carriers Carrier OCN NXX Count FRONTIER NORTH, INC. - MI 0695 1
