Reference Data SOHETTINGR, SD Rate Center SOHETTINGR — SD Data last updated: March 10, 2026 LATA 638 State SD Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 45.916802715748, -102.602372727373 Area Codes 605 Top Carriers Carrier OCN NXX Count CONSOLIDATED TELCOM 1607 1
