423 area code
Area code 423 is in Tennessee, United States, in the Eastern time zone. It covers Bristol, East Chattanooga, East Ridge, Johnson City, Kingsport, Morristown and more.
State / Province
Tennessee (TN)
Country
United States
Region
South
Time zone
Eastern
Current local time
—
Approx. location
35.8417, -83.6817 ↗
How to dial a 423 number
- National format
- (423) 555-0100
- International (E.164)
- +1 423 555 0100
- From abroad
- +1 423 …
Cities & areas in the 423 area code
7 known locations — a selection:
Bristol
East Chattanooga
East Ridge
Johnson City
Kingsport
Morristown
South Cleveland
About area code 423
Area code 423 is one of the North American Numbering Plan (NANP) codes serving Tennessee. In the NANP a full number looks like +1 (423) NXX-XXXX: the +1 is the country code for the US and Canada, 423 is the area code, and the remaining seven digits identify the specific line. A call is charged by your own carrier's plan, not by the area code itself.