Reference Data Rate Center Directory FOSS, OK Rate Center FOSS — OK Data last updated: March 10, 2026 LATA 536 State OK Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 35.45550447437475, -99.16841985924133 Area Codes 580 Top Carriers Carrier OCN NXX Count WINDSTREAM OKLAHOMA, INC. 1965 1
