| 423 | Tennessee (Two disconnected portions of East Tennessee-Bristol, Johnson City, Kingsport in north; Chattanooga, Cleveland in south), split from 615 |
| 615 | Tennessee (Nashville, Murfreesboro, Springfield, Lebanon, Dickson and north central Tennessee), split from 901 in 1954. |
| 731 | Tennessee (West Tennessee excluding greater Memphis: Union City, Jackson, Dyersburg, Martin, Brownsville, Paris, Bolivar), split from 901 |
| 865 | Tennessee (Knoxville, Gatlinburg, Newport, Jefferson City, Oak Ridge, Rockwood and central East Tennessee), split from 423 in 1999. 865 one of many vanity area codes, is reference as 'VOL' representing Tennessee as the volunteer state. |
| 901 | Tennessee (Memphis, Covington, Somerville and extreme southwestern Tennessee). Originally for the entire state. |
| 931 | Tennessee (Middle Tennessee, excluding Greater Nashville: Clarksville, Columbia, Manchester, Cookeville), split from 615 |
