Reference Data Rate Center Directory SPENCER, SD Rate Center SPENCER — SD Data last updated: March 10, 2026 LATA 640 State SD Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 43.72803182464765, -97.59213713369356 Area Codes 605 Top Carriers Carrier OCN NXX Count TRIOTEL COMMUNICATIONS, INC. 1669 1
