how to call the usa from canada
How to call United States from Canada: 1 - Canada exit code. 1 + Area Code + Local Number-Overall dialing code format. Note: United States and Canada are both members of NANP (North American Numbering Plan) so when calling between these countries, 1 is used in place of the country exit code.ote: United States and Canada are both members of NANP (North American Numbering Plan) so when calling between these countries, 1 is used in place of the country exit code.