Area Codes
| 343 | Ontario (Ottawa, eastern and southeastern Ontario) This area code is scheduled to provide numbering relief to area code 613 effective in 2011. | More information at: Area Code 343 Phone Number Blocks
| 343 | Ontario (Ottawa, eastern and southeastern Ontario) This area code is scheduled to provide numbering relief to area code 613 effective in 2011. | More information at: Area Code 343 Phone Number Blocks