Reference Data Rate Center Directory SENTINEL, OK Rate Center SENTINEL — OK Data last updated: March 10, 2026 LATA 536 State OK Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 35.1568272896566, -99.17493362947948 Area Codes 580 Top Carriers Carrier OCN NXX Count PIONEER TEL. COOP., INC. 2018 1
