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.
There are currently at least 7 cities in Tennessee that are associated with the 423 area code: 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 of 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.
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)-480-xxxx.
Detailed information about phone numbers in area code 423. Establish a Tennessee presence with a 423 telephone number.