Reference Data Rate Center Directory KNOXVILLE, OH Rate Center KNOXVILLE — OH Data last updated: March 10, 2026 LATA 324 State OH Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 40.49086125289803, -80.68111658136401 Area Codes 740 Top Carriers Carrier OCN NXX Count FRONTIER NORTH, INC. - OH 0615 1
