Area codes locator. The North American Numbering Plan (NANP) divides the territories of North America into Numbering Plan Areas (NPAs), which are encoded numerically with a three-digit telephone number prefix, commonly called the area code. There are 383 area codes in the North America across United States, Canada
United States area codes Area code lookup. The North American Numbering Plan (NANP) divides the territories of United States into Numbering Plan Areas (NPAs), which are encoded numerically with a three-digit telephone number prefix, commonly called the area code. There are 333 area codes in the United States across 51 states
Code | Territory or use | Date | Notes |
200 | not in use; available for non-geographic ... | easily recognizable code (ERC) | |
New Jersey ( Bergen County and Hudson ... | 1947 | originally covered all of New Jersey in ... | |
1947 | in 2021, overlaid by 771 | ||
Southwestern Connecticut ( Bridgeport, ... | 1947 | originally covered all of Connecticut in ... |
Area code 403 is a telephone area code in the North American Numbering Plan (NANP) for the Canadian province of Alberta. The numbering plan area encompasses the southern third of the province, which includes the Calgary area. This numbering plan area is also served by area codes 587, 825, and 368, which form a complex overlay for all of Alberta.
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