Area Codes
| 519 | Ontario (London, Windsor, Kitchener-Waterloo and most of southwestern Ontario; overlays with Area code 226) | More information at: Area Code 519 Phone Number Blocks
| 519 | Ontario (London, Windsor, Kitchener-Waterloo and most of southwestern Ontario; overlays with Area code 226) | More information at: Area Code 519 Phone Number Blocks