Reference Data Rate Center Directory MARTINSVL, OH Rate Center MARTINSVL — OH Data last updated: March 10, 2026 LATA 328 State OH Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 39.32371159563025, -83.8138792574515 Area Codes 937 Top Carriers Carrier OCN NXX Count FRONTIER NORTH, INC. - OH 0615 1
