Reference Data Rate Center Directory VELMA, OK Rate Center VELMA — OK Data last updated: March 10, 2026 LATA 536 State OK Area Codes 1 Exchanges (NXX) 2 Carriers 1 Coordinates 34.45956063398108, -97.6733375339268 Area Codes 580 Top Carriers Carrier OCN NXX Count WINDSTREAM OKLAHOMA, INC. 1965 2
