Reference Data Rate Center Directory ROYALTON, IL Rate Center ROYALTON — IL Data last updated: March 10, 2026 LATA 362 State IL Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 37.87812033942102, -89.11266897680599 Area Codes 618 Top Carriers Carrier OCN NXX Count FRONTIER NORTH, INC. - IL 1015 1
