A GlobalWorld International Date Planner contains all the area codes for states as welll as major cities.
USA states and Canadian provinces were each asigned a 3 digit code with a 0 as the middle number.
As time passed, many area codes were realigned or split so that each region would be certain to have enough numbers to meet its needs. Originally, there were 86 area codes, though Hawaii, Alaska, and the Caribbean were not yet a part of NANP. ATT and the "Baby Bells" used to give a complete area code directory in each of their publications. For a limited time, we are making our full color area code map - yes the same one found in our publications - FREE for download.
Area Codes were first established in the early 1940's by AT&T and they were implemented in 1947.

This is the body that manages North American telephone numbers on public switched networks in regions where the international country code is i??1i??.
Technically, there should be 10 million numbers available but emergency numbers and information numbers make the numbers that are usuable to be less. Since the map that you see above is part of our publications, we are making it available FREE for you to download. The more telephone lines were required by the growing population and economic growth, greater technologies were developed (such as DID PBX, which allowed direct inward dialing, instead of through a receptionist) as well as faxes, modems, cellular phones, and pagers. Simpson defense lawyers announced a toll-free 800 number in which to call in leads that might help their client's case.
But, with the rapidly expanding cellular phone business, there was an influx of telephone numbers requested. Large Metropolitan areas, such as the New York area, were given numbers with the addition of the numberal 1 in the middle digit.

When states realized that cellular companies had been given too many banks of numbers, the ATT publications quit publishing the area code directory.
According to the population of the city, the first and third digits were changed accordingly. Her number was the same as the Simpson number except that it was preceded with area code 310.

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