Telephone area codes?

This is a list of North American telephone area codes in effect for the North American Numbering Plan. Note that an area code cannot start with a 0 or 1 because each digit represents either feature codes or the North American long distance code. Prior to 1995 all area codes had either 0 or 1 as the middle digit; all new codes from 1996 to present use 2 through 8.