343 Area Code
Eastern Ontario (Ottawa area), Ontario
Area code 343 is located in Eastern Ontario (Ottawa area), Ontario. It covers Ottawa, Kingston, and surrounding areas in the Eastern time zone (UTC-5). Administered by NANPA.
Where is area code 343?
Area code 343 is located in Eastern Ontario (Ottawa area), Ontario. It covers Ottawa, Kingston, and surrounding areas in the Eastern time zone (UTC-5).
Cities Covered by Area Code 343
Area code 343 primarily serves the Eastern Ontario (Ottawa area) area of Ontario. The exact coverage includes Ottawa, Kingston, and Cornwall, along with surrounding communities and suburbs.
Time Zone
Eastern Time — UTC-5
Area code 343 operates in the Eastern Time Zone. When calling 343 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 343
Area code 343 was introduced in 2010 as a geographic area code serving Eastern Ontario (Ottawa area), Ontario, Canada. It remains the primary area code for this region. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.