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Learn about the format, prefixes, and area codes of Canadian telephone numbers, as well as the history and regulation of the North American Numbering Plan. The country code for Canada is 1, which is used for international access and trunk prefix.
Learn how telephone numbers are written and dialed in different countries and regions, according to the ITU recommendation E.123. Compare the formats, lengths, prefixes and codes of landline, mobile, toll free and service numbers.
Learn about the history and usage of telephone exchange names or central office names, which were assigned to switching systems in different localities. Find out how they were dialed, displayed, and replaced by numeric systems in various countries.
The North American Numbering Plan (NANP) is a telephone numbering system for twenty-five regions in twenty countries, mainly in North America and the Caribbean. It uses the country code 1 and divides the territories into numbering plan areas (NPAs) with three-digit area codes.
Learn about the history and current status of telephone area codes in Toronto, Ontario, Canada. Find out how 647 is an overlay area code for mobile and competitive services, while 416 is the original and dominant code for landlines.
Learn about the telephone number prefixes for reaching foreign countries or areas via international telecommunication networks. Find out the country code for Niger (227) and other countries in different world zones.
A telephone prefix is the first set of digits after the country and area codes of a phone number. In North America, it is the first three digits of a local number, and in other countries it may have different lengths and meanings.
A telephone number is a sequence of digits assigned to a device or subscriber for communication via the public switched telephone network or other networks. Learn about the history, formats, and functions of telephone numbers around the world.