Reference Data Rate Center Directory HYDRO, OK Rate Center HYDRO — OK Data last updated: March 10, 2026 LATA 536 State OK Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 35.54934852499394, -98.57812776415528 Area Codes 405 Top Carriers Carrier OCN NXX Count HINTON TEL. CO. OF HINTON OK, INC. 1995 1
