Reference Data Rate Center Directory SUMNER, MO Rate Center SUMNER — MO Data last updated: March 10, 2026 LATA 524 State MO Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 39.65416093336471, -93.2435078944398 Area Codes 660 Top Carriers Carrier OCN NXX Count WINDSTREAM MISSOURI, INC. 1885 1
