Area code lookup
What area code is 423?
Here's everything about it.
Instant lookup for the 423 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
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Caller ID · NPA-NXX-XXXXLive
Area code
423
Location
Chattanooga, TN
Local time
--:--:-- --
Chattanooga
423 at a glance
SummaryState
Tennessee
Time zone
Eastern (ET)
UTC offset
UTC−5 / −4 DST
Observes DST
Yes
Country
United States
Cities served by 423
ChattanoogaChattanooga
Where 423 sits on the map
No overlayCoverage area
About the 423 region
423 covers Chattanooga in Tennessee. It currently has no overlay code, so seven-digit dialing may still be possible within the region.
Who called me from 423?
Community reportsNo community reports for 423 numbers yet. Be the first to report one.
Got a call from 423 that isn't listed?
Frequently asked questions
FAQWhat area code is 423?+–
423 is a telephone area code serving Chattanooga in Tennessee, United States.
Where is area code 423 located?+–
It covers Chattanooga in Tennessee.
What time zone is 423?+–
423 observes Eastern (ET), which is UTC−5 / −4 DST and follows daylight saving time.
Can I get a 423 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 423 number regardless of where you physically live.