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The 343 area code covers Ottawa and the surrounding Eastern Ontario region.
The 343 area code is an overlay to the original 613 area code, meaning they serve the same geographic region. To further increase capacity, area code 753 was added as another overlay. Area code 613 was one of the original area codes from 1947. Area code 343 was activated on May 17, 2010, and area code 753 was activated on March 26, 2022. Ten-digit dialing is mandatory in this region.
Area code 343 is a General Purpose Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 343 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Ontario geographic region, and local calling area associated with the phone number.
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| Rate Center | Number of Prefixes |
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