Reference DataRate Center DirectoryDIAMOND, MO Rate CenterDIAMOND — MOData last updated: October 30, 2026LATA522StateMOArea Codes1Exchanges (NXX)1Carriers1Coordinates36.99440292451335, -94.31563205633303Area Codes417Top CarriersCarrierOCNNXX CountGRANBY TEL. CO.18871