Reference DataRate Center DirectoryVOLCANO, CA Rate CenterVOLCANO — CAData last updated: October 30, 2026LATA738StateCAArea Codes1Exchanges (NXX)1Carriers1Coordinates38.44239414766092, -120.6306373366609Area Codes209Top CarriersCarrierOCNNXX CountVOLCANO TEL. CO.23431