Reference Data Rate Center Directory COULTERVL, IL Rate Center COULTERVL — IL Data last updated: March 10, 2026 LATA 362 State IL Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 38.18528019614028, -89.60516764525224 Area Codes 618 Top Carriers Carrier OCN NXX Count FRONTIER NORTH, INC. - IL 1015 1
