With new telephone numbers in high demand, the Tennessee Public Utility Commission approved the addition of the new 729 area code to the existing 423 area code region, which covers two non-contiguous ...

JOHNSON CITY, Tenn. (WJHL) — Beginning Tuesday, local calls made within the 423 area code will have to be dialed using 10 digits instead of seven. To make a local call, the area code and phone number ...

(WCYB) — All local calls made in the 423 area code of Tennessee must be dialed using 10 digits beginning Tuesday. Calls using just 7 digits will not be completed, and will be routed to an announcement ...

East Tennessee has another new area code, and it's going to add three more digits to many people's local calls. Starting Aug. 5, people in upper and lower East Tennessee in the 423 area code region ...