![](https://media.wbir.com/assets/WBIR/images/a4784896-3019-4ef3-ab92-096a63687a44/20240709T151435/a4784896-3019-4ef3-ab92-096a63687a44_1140x641.jpg)
Reminder: East Tennessee's new '729' area code will go into effect soon, changing how local calls work
The new area code rules will be rolled out in phases. Starting in August, people in the 423 area code region should start dialing 10 digits for local calls. CHATTANOOGA, Tenn — East Tennessee will soon have another new area code, and it's going to add …