Reference Data Rate Center Directory CERROGORDO, IL Rate Center CERROGORDO — IL Data last updated: March 10, 2026 LATA 374 State IL Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 39.89015830589906, -88.73005298566862 Area Codes 217 Top Carriers Carrier OCN NXX Count FRONTIER NORTH, INC. - IL 1015 1
