423 Area Code - Location, Time, Map, Cities and Census Data
Jan 1, 2026 · Area Code 423 is located in Tennessee. It covers 90 cities, including Chattanooga, Johnson City, Morristown, Cleveland, and Kingsport. It also covers 28 counties, including Hamilton …
Area codes 423 and 729 - Wikipedia
Numbering plan area 423 (red), today overlaid with 729 since 2025 Area codes 423 and 729 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Tennessee.
423 Area Code - Map, Phone Lookup, Time Zone - Wirefly
Find 423 area code details including city, time zone, and map. Lookup area code 423 phone number, name, and location.
423 area code — information, time zone, map
423 is an area code located in the state of Tennessee, US. The largest city it serves is Chattanooga. Find out where 423 area code zone from, which states, counties and cities it covers. Get the most …
423 Area Code - Location, Map, Current Time, Prefixes
Area code 423 is located in Tennessee. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.
Area Code 423 - Map, time zone, and phone lookup - CallerCenter
About area code 423: location, common spam callers, related area codes, and more. Includes 423 reverse phone lookup to identify spam callers.
Area Code 423 - Tennessee - Zipdatamaps
List of ZIP Codes in Area Code 423 ... List of Counties in Area Code 423 ... List of Major Cities/Towns in Area Code 423