North Carolina · Eastern Time
743 Area Code
Area code 743 is in North Carolina, serving the Piedmont Triad of north-central North Carolina, including Greensboro and Winston-Salem. It is in the Eastern Time zone. It shares its territory with overlay code 336, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 743 area code?
743 is a North Carolina area code covering the Piedmont Triad of north-central North Carolina, including Greensboro and Winston-Salem. In the wider directory it sits in the South region.
Cities in the 743 area code
- Greensboro
- Winston-Salem
- High Point
- Burlington
- Asheboro
- Kernersville
- Thomasville
- Lexington
- Reidsville
- Clemmons
- Eden
- Mount Airy
- Mocksville
- Elkin
Counties served by 743
Guilford County, Forsyth County, Alamance County, Randolph County, Davidson County, Rockingham County, Surry County, Davie County, Stokes County and Yadkin County.
743 overlay codes and dialing
The 743 territory is covered by an overlay of 2 area codes: 336, 743. All of them serve the same geographic area, and the original code is 336. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 743 area code
743 went into service on May 23, 2016 as an overlay of 336, relieving number exhaustion in the Greensboro area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 743 a scam or spam risk?
743 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 743 number on your screen is no guarantee the caller is in Greensboro, NC or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other North Carolina area codes
Explore more
See every code in North Carolina, compare codes across the South region, or view all Eastern Time codes. You can also browse the 7XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
743 area code FAQ
Where is the 743 area code?
The 743 area code is in North Carolina, covering the Piedmont Triad of north-central North Carolina, including Greensboro and Winston-Salem, in the South region.
What cities are in the 743 area code?
Cities in the 743 area code include Greensboro, Winston-Salem, High Point, Burlington, Asheboro, Kernersville, Thomasville, Lexington, Reidsville and Clemmons.
What time zone is 743 in?
743 is in the Eastern Time zone.
What is the overlay for the 743 area code?
743 shares its territory with 336. Both codes (336, 743) serve the same area, so 10-digit dialing is required for every call.
When did the 743 area code start?
743 went into service on May 23, 2016 as an overlay of 336.
Do I have to dial 10 digits for 743?
Yes. Because 743 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 743 a toll-free or premium code?
No. 743 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.