Reference Data Rate Center Directory DUCOR, CA Rate Center DUCOR — CA Data last updated: March 10, 2026 LATA 728 State CA Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 35.89144568781053, -119.0477541797133 Area Codes 559 Top Carriers Carrier OCN NXX Count DUCOR TEL. CO. 2313 1
