Located in the Central (GMT -06:00) time zone. Area code 346 serves the state of Texas. This area code was assigned on April 27th, 2013. On July 1st, 2014 it went into service. 346 is a General Purpose Code. 346 service area does overlap with 281 713 832 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.