Reference Data Rate Center Directory KENNEBEC, SD Rate Center KENNEBEC — SD Data last updated: March 10, 2026 LATA 640 State SD Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 43.90323960339857, -99.86160428085806 Area Codes 605 Top Carriers Carrier OCN NXX Count KENNEBEC TEL. CO. 1668 1
