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The original configuration of the North American Numbering Plan assigned eighty-six area codes in October 1947, one each to every numbering plan area. The territories of the United States, which included Alaska, and Hawaii, did not receive area codes at first, nor did the territories of Canada or Newfoundland and Labrador, which was a British ...
- 217, 312, 618, 815
- 216, 419, 513, 614
- 212, 315, 518, 716, 914
- 215, 412, 717, 814
Feb 13, 2014 · As the network grew, it also became more complex. Splits and overlays of area codes, especially as the population of phone users grew in the 1980s and 1990s, became common. Lapsley points out that ...
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Aug 4, 2023 · One plan would add either a 0 or 1 to the beginning or end of an area code or the seven-digit number. Another option is to add 9 as the second digit of existing area codes. So the 650 area code for San Mateo County, California, would become 6950. We’ll have to wait to find out which plan is adopted.
When did area codes first come into use? The area code system was developed by AT&T and Bell Laboratories in the 1940's, and went into effect in 1947. It was called the North American Numbering Plan (NANP) and included the United States and Canada .
Aug 29, 2023 · How area codes used to work. Today, an area code can be any three digit number. Originally, using the systems of the day, the rules were a little tighter. The first digit had to be a number between 2 and 9. The second digit had to be 0 or 1. The third digit had to be a number between 2 and 9.
On January 1, 1947, the first North American area codes were issued in regions where standard 7 digit dialing codes were scheduled to be exhaused the soonest. By adding a 3 digit prefix to a 7 digit local number, this allowed for hundreds of millons of new phone numbers to be issued.
But technology had won, and the all-number area code was here to stay. This system is still in use today and continues to be expanded to meet the ever-growing demand of required phone numbers. You can learn more about area codes and how they continue to evolve on our About Area Codes page.
