Reference Data Rate Center Directory ALSEN, SD Rate Center ALSEN — SD Data last updated: March 10, 2026 LATA 640 State SD Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 42.96110400000001, -96.80559840000001 Area Codes 605 Top Carriers Carrier OCN NXX Count CLARITY TELECOM, LLC DBA BLUEPEAK 1652 1
