Reference Data Rate Center Directory FOSTORIA, MI Rate Center FOSTORIA — MI Data last updated: March 10, 2026 LATA 344 State MI Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 43.25329598492594, -83.37252213049845 Area Codes 989 Top Carriers Carrier OCN NXX Count WOLVERINE TEL. CO. 0738 1