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In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state ...
This is a list of future area codes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the given numbering plan areas (NPAs). The dates are subject to change during implementation as published in the official NANP Administrator Planning Letters .
On November 10, 2003, the FCC additionally ruled that number portability applies to landline numbers moving to mobile telephones and, on October 31, 2007, the FCC made clear that the obligation to provide LNP extends to VoIP providers. [30] Toll-free telephone numbers (area code +1-800) have been portable through the RespOrg system since 1993 ...
Area codes 208 and 986 are telephone area codes in the North American Numbering Plan for all of Idaho. Area code 208 is one of the 86 original area codes created by the American Telephone and Telegraph Company (AT&T) in 1947, and was Idaho's sole area code for seventy years.
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The company has been known by a number of names during which its service area has changed. The formal name of the company from the 1910s through the 1984 Bell System divestiture was The Pacific Telephone and Telegraph Company. The “Pacific Bell” was phased out of public use in 2002, although it remains the legal name of AT&T's local ...
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).
Most of the Washington region's inner ring is a single local calling area, even though it is split between three area codes–the District's area code 202, Maryland's area code 301 and Northern Virginia's area code 703. For most of the second half of the 20th century, it was possible to dial any number in the metro area with just seven digits.