Area code 423
Area code 423 is a telephone area code in the North American Numbering Plan. It serves Tennessee, the United States.
- 423area code
- TNTennessee
- UScountry
- 11-Sep-95in service
How to dial a 423 number
From within the United States and Canada, dial 1, then 423, then the seven-digit number. From another country, dial your international access code, then +1 423 and the seven-digit number.
Area code 423 covers the same territory as 615 and 729. When several area codes share one area like this, it is called an overlay.
Other area codes in Tennessee
615, 629, 729, 731, 865, 901, 931
Frequently asked questions
Where is area code 423?
Area code 423 serves Tennessee, the United States.
What is the country code for a 423 number?
Numbers with North American area codes use the country calling code +1.