Reference DataRate Center DirectoryCURLEW, IA Rate CenterCURLEW — IAData last updated: October 30, 2026LATA630StateIAArea Codes1Exchanges (NXX)1Carriers1Coordinates42.97872903918656, -94.73701865545083Area Codes712Top CarriersCarrierOCNNXX CountNORTHWEST TEL. COOP. ASSN.12611