423 Area Code

Primary cities: Chattanooga, Johnson City, Kingsport, Cleveland, Morristown ... all cities

Cities: Apison, Athens, Baileyton, Ball Play, Benton, Blountville, Bluff City, Bristol, Bulls Gap, Butler, Charleston, Chattanooga, Church Hill, Cleveland, Clinchport, Coker Creek, College Station, Collegedale, Copper Basin, Cumberland Gap, Dayton, Decatur, Deer Lodge, Dunlap, Elizabethtown, Englewood, Erwin, Etowah, Fall Branch, Fall Creek Falls, Fork Ridge, Georgetown, Greeneville, Hampton, Huntsville, Jasper, Jellico, Johnson City, Jonesboro, Kingsport, Knoxville, La Follette, Limestone, Madisonville, Midway, Morristown, Mosheim, Mountain City, New Tazewell, Newport, Nine Mile, Niota, Oakdale, Oneida, Ooltewah, Petros, Pikeville, Riceville, Roan Mountain, Robbins, Rogersville, Shady Valley, Sneedville, Soddy Daisy, South Pittsburg, Spring City, Stoney Creek, Sullivan Gardens, Sunbright, Surgoinsville, Sweet Water, Tellico Plains, Vonore, Wartburg, Whitwell