Reference Data Rate Center Directory DIETERICH, IL Rate Center DIETERICH — IL Data last updated: March 10, 2026 LATA 976 State IL Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 39.06198680000001, -88.37976680000001 Area Codes 217 Top Carriers Carrier OCN NXX Count MONTROSE MUTUAL TEL. CO. 1058 1
