What is what area code is 343?

Area code 343 is a telephone area code that covers the eastern part of Ontario, Canada. The area served by the 343 area code includes Ottawa, the nation's capital city, as well as surrounding communities such as Kanata, Nepean, Gloucester, and Orleans. Area code 343 was established in 2010 as an overlay for the existing 613 area code to ensure a sufficient supply of phone numbers in the region. Calls made within the same area code do not require dialing the area code, but long-distance calls must include the area code.