Reference Data Rate Center Directory MARSHALL, OK Rate Center MARSHALL — OK Data last updated: March 10, 2026 LATA 536 State OK Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 36.15483030570211, -97.6252597476962 Area Codes 580 Top Carriers Carrier OCN NXX Count PIONEER TEL. COOP., INC. 2018 1
