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Tennessee · Eastern Time

423 Area Code: Chattanooga, TN

The 423 area code covers Chattanooga, Johnson City, Kingsport and Bristol in Tennessee, on Eastern Time. Here is the current local time there, and whether you can legally place a solicitation call to a 423 number right now.

Current local time in the 423 area code

Current local time in the 423 area code

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Can you legally call a 423 number right now?

Checking…

DayLegal calling window in Tennessee
Sunday8:00 AM-9:00 PM
Monday8:00 AM-9:00 PM
Tuesday8:00 AM-9:00 PM
Wednesday8:00 AM-9:00 PM
Thursday8:00 AM-9:00 PM
Friday8:00 AM-9:00 PM
Saturday8:00 AM-9:00 PM

Windows shown are the stricter of the federal TCPA/TSR rule (8 a.m.-9 p.m. local) and Tennessee's own statute, in the called party's local time. Informational only, not legal advice. Check any number against the full TCPA calling hours calculator.

Area code 423 at a glance

StateTennessee
Principal cityChattanooga
Time zoneEastern Time
Overlay codesNone
Weekday calling window8:00 AM-9:00 PM local
CountryUnited States

Cities in the 423 area code

These are the main population centers 423 serves. Smaller towns across the same Tennessee region share the code.

  • Chattanooga
  • Johnson City
  • Kingsport
  • Bristol
  • Cleveland

Calling 423 numbers legally

Tennessee has no calling-hour statute stricter than federal law, so the TCPA and the FTC's Telemarketing Sales Rule set the window: solicitation calls only between 8 a.m. and 9 p.m. in the called party's local time. Because the rule follows the called party, a 423 number is on Eastern Time regardless of where you dial from.

Ringless voicemail sits under the same rules as a live call, which is why TCPA compliance matters before you drop to a list. To check a whole list rather than one code, the phone number formatter tags every number with its state so you can segment sends by time zone.

Other Tennessee area codes

615Nashville629Nashville731Jackson865Knoxville901Memphis931Clarksville

Or browse every US area code.

FAQ

423 area code questions

423 is a US telephone area code serving Tennessee, on Eastern Time. Its principal city is Chattanooga, and it also covers Johnson City, Kingsport and Bristol.
Area code 423 is in the state of Tennessee. It serves Chattanooga, Johnson City, Kingsport and Bristol, and its principal city is Chattanooga.
The 423 area code is on Eastern Time (America/New_York). The panel above shows the current local time there, updated live.
It depends on the local time in Tennessee. Tennessee has no calling-hour rule stricter than federal law, so the TCPA and the FTC's Telemarketing Sales Rule govern: solicitation calls are permitted only between 8 a.m. and 9 p.m. in the called party's local time. The live verdict above checks the current time against that window for you.
On weekdays, solicitation calls to Tennessee numbers are permitted 8:00 AM to 9:00 PM local time. Sunday hours are 8:00 AM to 9:00 PM.
Not by itself. 423 is a legitimate Tennessee area code used by residents and businesses in Chattanooga and Johnson City. Scammers do spoof caller ID to show a local area code, because people answer local numbers more often, so treat an unexpected call asking for payment or personal details with suspicion regardless of the prefix.

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