The number 423 has become synonymous with Chattanooga as the area code celebrates its 31st birthday this year. April 23 has even become known as 423 Day in the city. Despite that, 423 still has a ...
A new area code, 729, will soon join the existing 423 area code serving most of East Tennessee. State regulators last week approved the creation of the new area code in the growing region since the ...
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