Where is area code 343? The Canadian area code 343 is for Ontario Other Canada area code 343 CitiesClarence RocklandOttawaCarleton PlaceBrockvilleBellevilleKingstonGreater NapaneeCornwallRenfrewPembrokePerthGananoqueHawkesburySmiths FallsClarence RocklandOttawaCarleton PlaceBrockvilleBellevilleKingstonGreater NapaneeCornwallRenfrewPembrokePerthGananoqueHawkesburySmiths Falls Click here to find Canada Area Code List
