Reference Data Rate Center Directory ALEXANDRIA, SD Rate Center ALEXANDRIA — SD Data last updated: March 10, 2026 LATA 640 State SD Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 43.65474212103091, -97.78180619725737 Area Codes 605 Top Carriers Carrier OCN NXX Count TRIOTEL COMMUNICATIONS, INC. 1669 1
