About Area Code 423
Area code 423 is a telephone area code serving Chattanooga, Tennessee and surrounding regions. It is part of the North American Numbering Plan (NANP).
If you received a call from a 423 number you don't recognize, it could be a local business, resident, telemarketer, or spam caller based in the Chattanooga area. Use the lookup tool above to identify the caller in seconds.
Note: Scammers frequently use "neighbor spoofing" — making calls appear to come from local area codes like 423 to increase answer rates. Always verify an unknown 423 number before calling back.
Common Reasons for Calls from 423 Numbers
- Local businesses or service providers in Chattanooga, Tennessee
- Neighbors or community members you don't have saved
- Local government or public service notifications
- Telemarketing operations using local number spoofing
- Debt collectors or financial service calls
- Scammers spoofing 423 numbers to appear local
How to Look Up a 423 Phone Number
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