423 Area Code

Chattanooga, TN and 50 other locations · United States

Country code +1 · ISO US

Area Code

423

Country

Calling Code

Timezone

America/Chicago

Example 423 Number

A sample number from this area code, formatted three ways.

National	International	E.164
(423) 555-0123	+1 423-555-0123	+14235550123

Pre-filled with a 423 sample number. Edit it and click "Try It" to see the parsed result.

Google's libphonenumber lists these locations for the 423 area code.

Dial +1 followed by the national number, dropping any leading 1.

Dial 1 before the local number to make a domestic call.

Dial 011 followed by the destination country code and number.

└ The 423 area code covers Chattanooga, TN in United States.

└ Numbers in the 423 area code are in the America/Chicago timezone.

└ From abroad, dial +1 423 followed by the local number. Within United States, dial 1423 before the local number.