Reference Data Rate Center Directory GREENTOP, MO Rate Center GREENTOP — MO Data last updated: March 10, 2026 LATA 524 State MO Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 40.34856643628298, -92.564672213715 Area Codes 660 Top Carriers Carrier OCN NXX Count MARK TWAIN RURAL TEL. CO. 1914 1
