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In the United States, according to the regulations of the Federal Communications Commission, the end-user has the right to select a RespOrg and have their numbers transferred to their control. This process is called "porting" or "change of RespOrg" and requires a signed letter of authorization from the end-user.
Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, or 888.Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future.
Canada and the United States have experienced rapid growth in the number of area codes, particularly between 1990 and 2005. The widespread adoption of fax, modem, and mobile phone communication, as well as the deregulation of local telecommunication services in the United States during the mid-1990s, increased the demand for telephone numbers.
Toll-free telephone service is a telecommunication service in which subscribers are assigned telephone number in NPAs 800, 888, 877, 866, 855, 844, and 833. Calls to these numbers incur no toll charges for callers. The American Telephone & Telegraph Company (AT&T) first introduced 800 toll-free service in 1967. [2]
In NANP telephone number specifications, the letter N represents a numeral from 2 through 9, while the letter X represents any numeral. Thus, NXX is a number from 200 through 999, while XXXX is a range from 0000 through 9999. The first three digits of a telephone number are the numbering plan area code (NPA code, or simply NPA).
Costa Rican telephone numbers have eight digits, and are usually written in the format 2NNN-NNNN (for landlines), 8NNN-NNNN (for mobile telephone numbers from local telephone company ICE), 6NNN-NNNN (for mobile telephone numbers from Movistar) and 7NNN-NNNN (for mobile phone numbers from Claro). [22] Toll-free numbers use the format 800-NNN ...
800 are used for toll free numbers. 801 numbers used to be for premium-rate telephone numbers (such as 1-900 numbers in the United States) . Nowadays 900 numbers are premium-rate telephone numbers. 900–999: Campeche, Chiapas, Oaxaca, Puebla, Quintana Roo, Tabasco, Veracruz and Yucatán
Many toll-free numbers are not available from cell phones (usually blocked by the cell phone provider rather than by the provider of the toll-free number, in an effort to prevent low-price competition from calling card providers). Some toll-free numbers are not available from phones listed by the owner of the number, including many payphones ...