423 Area Code - Location map, time zone, and phone lookup
Where is area code 423? Area code 423 serves central Tennessee, north and south of Knoxville. It includes the cities of Chattanooga, Johnson City, and Kingsport. It is the only area code that serves …
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.
423 Area Code - Location, Time, Map, Cities and Census Data
Apr 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 …
423 Area Code Phone Numbers | Whitepages
Browse area code 423 phone numbers, prefixes and exchanges. The 423 area code serves Chattanooga, Knoxville, Johnson City, Bristol, Kingsport, covering 86 ZIP codes in 30 counties.
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 …
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: Location Map (Tennessee) - Reverse Lookup
Area code 423 serves two disconnected areas of East Tennessee, separated by area code 865. No other cities and towns are explicitly mentioned in the provided context. Area code 423 is overlaid by …
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, Tennessee, United States - Location map, time zone ...
Area code 423 serves eastern Tennessee, including cities such as Chattanooga, Johnson City, Kingsport, and Cleveland. It was created in 1995 from a split of area code 615 and was later overlaid …
423 Area Code - Knoxville, TN | Location, Map, Time Zone & Cities ...
Area code 423 is a telephone area code in Tennessee serving Knoxville and surrounding communities. The 423 area code is in the Eastern Time Zone (EDT). The current local time in the 423 area code is …