Published: January 20, 2015
Approved on August 13, 2014 by the North Carolina Utilities Commission, the 743 area code will be introduced as the relief method for existing area code 336, covering a northern portion of North Carolina with cities such as Greensboro, Winston-Salem and smaller towns like Burlington, Mount Airy or Trinity. The newly approved NPA will overlay 336 (will serve the exact same area).
After a 6 month permissive dialing period, when local calls within area code 336 may be dialed using both 7 and 10 digits, 10 digit dialing becomes mandatory in April, 2016.
See official NANPA announcement and map of the new overlay area (PDF document).
Visit area code 743 page for a list of cities served, map and other info.