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800 is an area code for toll-free telephone numbers, also known as freephone or freecall. Toll-free means that charges are paid by the person called instead of the caller.
The 800 area code is also found in the 0800 and 1-800 format.
The 800 number often comes in the form of a vanity number, a custom toll-free number created as a sequence of easy-to-remember numbers like 1-800-800-8000 or phonewords like 1-800-Taxicab, which can be rented to companies operating in the same line of business but in different cities.
It was first put into service in January 1966. The 800 area code was the first toll-free area code used in the US.
The 800 code does not cover a specific geographical area or time zone.
Area Code 800 Extensions