423 area code
Area code 423 is in Tennessee, including Chattanooga, Johnson City, Kingsport and Cleveland. It's on Eastern Time, with parts on Central Time.
Eastern Time · Chattanooga, Johnson City and Kingsport
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Central Time
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Is it a good time to call 423?
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Business hours are taken as 9 AM to 5 PM on weekdays in the main time zone. US telemarketing rules only allow sales calls between 8 AM and 9 PM local time.
Cities in area code 423
| City | Time zone |
|---|---|
| Chattanooga, TN | Eastern Time |
| Johnson City, TN | Eastern Time |
| Kingsport, TN | Eastern Time |
| Cleveland, TN | Eastern Time |
| Morristown, TN | Eastern Time |
| Bristol, TN | Eastern Time |
| Greeneville, TN | Eastern Time |
| Elizabethton, TN | Eastern Time |
| Newport, TN | Eastern Time |
| Athens, TN | Eastern Time |
| Hixson, TN | Eastern Time |
| Ooltewah, TN | Eastern Time |
Other area codes in Tennessee
More: look up another area code · time zone converter · US time zones map
Questions people ask
Where is area code 423?
Area code 423 is in Tennessee, including Chattanooga, Johnson City, Kingsport and Cleveland.
What time zone is area code 423?
423 is on Eastern Time, with parts on Central Time (UTC−5, UTC−4 in summer).
What time is it in area code 423 right now?
The live clock at the top of this page shows the current local time in area code 423.