423 Area Code - Location, Time, Map, Cities and Census Data - ZIP-Codes.com
https://www.zip-codes.com/area-code/area-code-423.asp
WEBApr 1, 2024 · Area Code 423 is located in Tennessee. It covers 90 cities, including Chattanooga, Johnson City, Kingsport, Cleveland, and Morristown. It also covers 28 counties, including Hamilton County, Washington County, Sullivan County, Mcminn County, and Bradley County.
DA: 79 PA: 6 MOZ Rank: 29