901 Area Code
251 area code was split from area code 334 and formed on June 18, 2001. The 251 area code covers the southwestern part of Alabama including Mobile, Baldwin and Washington Counties, and parts of six other counties.
| Arlington, TN | Atoka, TN | Braden, TN |
| Brighton, TN | Brunswick, TN | Burlison, TN |
| Collierville, TN | Cordova, TN | Covington, TN |
| Drummonds, TN | Eads, TN | Ellendale, TN |
| Gallaway, TN | Germantown, TN | La Grange, TN |
| Laconia, TN | Macon, TN | Mason, TN |
| Memphis, TN | Millington, TN | Moscow, TN |
| Munford, TN | Oakland, TN | Rossville, TN |
| Somerville, TN | Tipton, TN | Williston, TN |