| General Information about Area Code 423 | |
|---|---|
| Country | United States |
| State / Province / Territory | Tennessee |
| Major City | Chattanooga |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 423-216 | Benton | Polk | Landline |
| 423-382 | Sneedville | Hancock | Landline |
| 423-760 | Chattanooga | Hamilton | Wireless |
| 423-933 | Chattanooga | Hamilton | Landline |
| 423-270 | Erwin | Unicoi | Wireless |
| 423-717 | Athens | Mcminn | Wireless |
| 423-276 | Kingsport | Sullivan | Wireless |
| 423-715 | Cleveland | Bradley | Wireless |
| 423-507 | Athens | Mcminn | Landline |
| 423-519 | Tellico Plains | Monroe | Wireless |
| 423-886 | Chattanooga | Hamilton | Landline |
| 423-314 | Chattanooga | Hamilton | Wireless |
| 423-817 | Kingsport | Sullivan | Wireless |
| 423-777 | Chattanooga | Hamilton | Landline |
| 423-442 | Madisonville | Monroe | Landline |
| 423-479 | Cleveland | Bradley | Landline |
| 423-629 | Chattanooga | Hamilton | Landline |
| 423-439 | Johnson City | Washington | Landline |
| 423-797 | Bristol | Sullivan | Wireless |
| 423-530 | Kingsport | Sullivan | Wireless |