The 343 area code belongs to the Ontario (ON) province of Canada and some of the locations covered are Cornwall, Ottawa and more:
|Province||Larger cities in area code 343||Time Zone|
|Belleville, Brighton, Brockville, Cornwall, Kingston, Ottawa, Pembroke, Petawawa, Trenton, Whitney
Current time is
|-- overlays area code 613 --|
Area code 343 is an overlay NPA introduced on May 17, 2010 to cover the eastern part of Ontario previously served by NPA 613 alone. 10 digit local dialing is mandatory in the newly formed overlay complex.