Reminder – new TN 729 area code
The Tennessee Public Utility Commission issued a news release about the new 729 area code that will overlay the existing 423 area code in eastern Tennessee earlier this year. Please be aware of the key dates for the overlay implementation:
- August 5, 2024: Permissive 7- or 10-digit dialing began for customers with the 423 area code
- February 5, 2025: Mandatory 10-digit dialing begins for customers with the 423 area code
- March 5, 2025: The new 729 area code becomes effective, and mandatory 10-digit dialing is required in the new 729 area code too.
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