The new 729 area code will co-exist everywhere in this region with the 423 area code. Anyone receiving a 729 number will be required to dial 10 digits as well. For more information, click here.

Texans with phone numbers in the 915, 254, 361, 409, 806, 830 and 940 area codes must dial 10-digits (the area code and the telephone number) for all local calls starting Oct. 25, according to a ...

The 729 area code will be introduced in the 423 area code zone centered around Johnson City and Bristol to the north and Chattanooga to the south.