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Learn about the history, assignment, and operation of toll-free telephone numbers in the North American Numbering Plan, which have the area code prefixes 800, 833, 844, 855, 866, 877, and 888. Find out how to call or get a toll-free number in the U.S. or Canada, and what are the special cases and restrictions.
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 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 about the history and features of ANI, a telecom network service for identifying the originating telephone number on toll calls. Find out how ANI differs from caller ID, toll-free numbers, and DNIS.
Learn about the history and features of toll-free numbers, which are billed for all arriving calls and identified by a dialing prefix. Find out how to get a toll-free number in different countries and regions, such as 0800 in the UK.
As the services long predated international freephone service +800, it was required to establish a toll-free number in each country that conformed to that country's method of establishing such a service. Since many countries had not yet migrated their freephone services to the better known 800 area code, it made for a variety of different ...
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.
Directory assistance or 411 is a phone service to find out a specific telephone number and/or address of a residence, business, or government entity. Learn how to use 411 in different areas, billing methods, data sources, and alternative services in the U.S. and Canada.
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