On May 30, 2023, the Tennessee Public Utility Commission approved the all-service overlay of area code 423 with area code 729. Permissive ten-digit dialing started on August 5, 2024, and became …

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 …

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.

Find 423 area code details including city, time zone, and map. Lookup area code 423 phone number, name, and location.

Area Code 423 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 7,499,682 unique phone numbers and 679,763 individuals near the cities of Chattanooga, Johnson …

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 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 …

Lookup information on Area Code 423 - get demographic, NPA NXX, and other data by area code

Sep 11, 1995 · Area code 423 is located in Tennessee. Get area code location and dialing plans for all phone prefixes in area code 423.

Area code 423 is the area code for 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 the area. The 423 …