Reference Data Rate Center Directory STEELEVL, IL Rate Center STEELEVL — IL Data last updated: March 10, 2026 LATA 362 State IL Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 38.00934406413199, -89.660116963751 Area Codes 618 Top Carriers Carrier OCN NXX Count FRONTIER NORTH, INC. - IL 1015 1
