Establish a local presence by purchasing a phone number in area code 423. Phone numbers in area code 423 are associated with the state of Tennessee. There are currently at least 7 U.S. cities and 109 U.S. ZIP Codes associated with this telephone area code. In addition, there are at least 800 NXX's (the three-digit code that makes up digits 4-6 of a standard 10-digit U.S. phone number) available for use along with area code 423.
Phone numbers in area code 423 are associated with the state of Tennessee.
The 423 area code currently has at least 7 cities in Tennessee associated with it: Bristol, TN; East Chattanooga, TN; South Cleveland, TN; East Ridge, TN; Johnson City, TN; Kingsport, TN; and Morristown, TN.
There are at least 109 U.S. ZIP codes associated with the area code 423 at this time (view all here).
The ZIP Code 37421 is the ZIP Code most frequently connected to the 423 area code. The 37421 ZIP Code is primarily associated with Hamilton County in the state of Tennessee.
There are 26 counties associated with the 423 area code: Hamblen County; Campbell County; Washington County; McMinn County; Sullivan County; Hamilton County; Monroe County; Unicoi County; Scott County; Polk County; Hawkins County; Marion County; Greene County; Cocke County; Bradley County; Claiborne County; Johnson County; Rhea County; Carter County; Hancock County; Morgan County; Meigs County; Bledsoe County; Sequatchie County; Loudon County; Van Buren County.
An NXX, which is also known as the a "central office code" or an "exchange", is the three-digit sequence that comprises digits 4-6 of a standard 10-digit U.S. phone number. The NXX is the second main part of a phone number that comes directly after the area code, e.g. (423)-280-xxxx.
Detailed information about area code 423 phone numbers. Establish a Tennessee presence with a 423 number.