423 Area Code
The 423 area code is a telephone area code in the state of Tennessee, USA. Established in 1995, 423 primarily serves the eastern portion of Tennessee. Major cities and communities in this area include Chattanooga, Johnson City, Kingsport, and Bristol. The area is known for its scenic Appalachian Mountains, vibrant local culture, and historic landmarks.
Understanding the 423 Area Code
The 423 area code supports landline phones, mobile phones, and VoIP services. There is currently no overlay, so local dialing generally uses the 7-digit format, though 10-digit dialing is increasingly common.
423 Area Code Map and Location
The 423 area code map covers eastern Tennessee, including the Tri-Cities region, Chattanooga, and surrounding areas in the Appalachian Mountains.
Major Cities and Communities in the 423 Area Code
- Chattanooga - Largest city in southeastern Tennessee and a key cultural and economic center
- Johnson City - Part of the Tri-Cities region, educational and medical hub
- Kingsport - Industrial and residential city in the Tri-Cities area
- Bristol - Known for its music heritage and border with Virginia
- Elizabethton - Historic city in northeastern Tennessee
ZIP Codes within the 423 Telephone Zone (Examples)
- 37402 - Chattanooga, TN
- 37601 - Johnson City, TN
- 37660 - Kingsport, TN
- 37620 - Bristol, TN
- 37643 - Elizabethton, TN
Time Zone
The 423 area code is located in the Eastern Time Zone (ET), observing Eastern Standard Time (EST, UTC-5) in winter and Eastern Daylight Time (EDT, UTC-4) during daylight saving time.
Dialing, Phone & Service Details
- Overlay: None
- Local dialing: 7-digit or 10-digit dialing recommended
- Long-distance calls within the USA: Dial
1 + 423 + 7-digit number - International calls: Dial your country�s exit code +
1+423+ 7-digit number - Services: Landline, mobile, VoIP
What area code is 423? / Where�s area code 423?
What area code is 423? � The 423 area code is a Tennessee telephone code serving eastern Tennessee, including the Tri-Cities and Chattanooga areas.
Where�s area code 423? � It is located in eastern Tennessee, USA, including Chattanooga, Johnson City, Kingsport, Bristol, and Elizabethton.
Frequently Asked Questions (FAQ) about 423 Area Code
What is the 423 area code?
423 serves eastern Tennessee, including Chattanooga, Johnson City, Kingsport, Bristol, and Elizabethton.
When was the 423 area code created?
The 423 area code was established in 1995 to serve eastern Tennessee.
Where is area code 423 located?
It covers eastern Tennessee, including the Tri-Cities and Chattanooga regions.
What time zone is 423 in?
The 423 area code follows the Eastern Time Zone (EST/EDT).
Does 423 have an overlay?
No, 423 currently has no overlay area code.
What services does 423 support?
423 supports landline, mobile, and VoIP services throughout eastern Tennessee.
