Reference DataRate Center DirectoryCOULTERVL, IL Rate CenterCOULTERVL — ILData last updated: October 30, 2026LATA362StateILArea Codes1Exchanges (NXX)1Carriers1Coordinates38.18528019614028, -89.60516764525224Area Codes618Top CarriersCarrierOCNNXX CountFRONTIER NORTH, INC. - IL10151