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10-digit dialing starts for East Tennessee's 423 area code. Here's what you need to know
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 ...
Tennessee's newest area code will be in service in March. The 729 area code will be added to the existing 423 area code zone centered around Johnson City and Bristol to the north and Chattanooga to ...
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 ...
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