Editing Ten-digit dialing (section)

{{short description|Telephone dialing procedure}}
{{Refimprove|date=December 2009}}
'''Ten-digit dialing''' is a telephone dialing procedure in the countries and territories of the [[North American Numbering Plan]] (NANP). It is the practice of including the [[area code]] of a [[telephone number]] when [[Dialling (telephony)|dialing]] to initiate a [[telephone call]]. When necessary, the ten-digit number may be prefixed with the trunk code ''1'', which is referred to as ''1+10-digit dialing'' or ''national format''.