US Area Code
Area Code 423Chattanooga, TN
Covers Chattanooga, Knoxville area, and east Tennessee.
Get a 423 Number423
Area Code
Eastern Time
Time Zone
Overlays
Region
East Tennessee
About Area Code 423
Covers Chattanooga, Knoxville area, and east Tennessee.
History: Split from 615 in 1995.
Get a 423 number for east Tennessee.
Get a real 423 area code number for your business.
Get Your 423 Number