| 205 | Alabama (Originally the code for the entire state, it still covers the largest city, Birmingham; Tuscaloosa; western and central Alabama) More information at: Area Code 205 Phone Number Blocks |
| 251 | Alabama (Mobile, Jackson, Brewton and southwestern Alabama) More information at: Area Code 251 Phone Number Blocks |
| 256 | Alabama (Huntsville, Decatur, Cullman, Gadsden, Florence, Anniston and northern and eastern Alabama) More information at: Area Code 256 Phone Number Blocks |
| 334 | Alabama (Montgomery, Auburn, Opelika, Dothan, Selma and southeastern Alabama) More information at: Area Code 334 Phone Number Blocks |
| 659 | Alabama This Area code is scheduled to provide numbering relief to Area code 205 but no date has been assigned for this to go into effect. More information at: Area Code 659 Phone Number Blocks |
