Learn about the 423 area code, including its location, cities, time zone, introduction date, and related area codes.
423 Area Code Details
Major Cities in the 423 Area Code
The 423 area code is associated with the following cities and communities:
- Bristol
- East Chattanooga
- East Ridge
- Johnson City
- Kingsport
- Morristown
- South Cleveland
Where Is Area Code 423 Located?
The 423 area code serves communities in Tennessee. The exact communities and numbering assignments can change as telephone numbering resources are updated.
423 Area Code Time Zone
The 423 area code is associated with the Central time zone.
When Was 423 Area Code Introduced?
The 423 area code was introduced in 11-Sep-1995.
How to Call a 423 Area Code Number
For a call within the same numbering plan, dial the required local number according to your carrier’s dialing rules. For calls from outside the United States, use the United States country code (+1), followed by the area code and seven-digit telephone number.
Related Area Codes
423 Area Code FAQ
What state is 423 area code in?
The 423 area code is associated with Tennessee.
What time zone is 423 area code in?
The 423 area code is associated with Central.
What cities use 423 area code?
Bristol|East Chattanooga|East Ridge|Johnson City|Kingsport|Morristown|South Cleveland
More Questions About Area Code 423
What state is area code 423 in?
Area code 423 is associated with Tennessee.
What time zone is area code 423 in?
The listed time zone for area code 423 is Central.