Area code 743

Area code 743 Greensboro, North Carolina

Area code 743 is one of the newer area codes, added in 2016 to North Carolina, with numbers assigned in Greensboro, Winston-Salem, Burlington and 41 more places. It’s 12:14 AM there now.

State: North Carolina10 area codes in North Carolina
Time zone: Eastern12:14 AM there now
Exchanges: 16244 places
Overlay: 336Same area, 10-digit dialing

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Where area code 743 is

Numbers in 743 are assigned to 44 places in 16 counties: Guilford County, Forsyth County, Alamance County, Davidson County, Randolph County, Rockingham County, plus 10 more.

No single place dominates: Greensboro, the largest, has 14% of the exchanges.

Greensboro22
Winston-Salem19
Burlington13
Lexington7
High Point6
Summerfield6
Asheboro6
Mount Airy4
Gibsonville3
Eden3
Saxapahaw3
Walkertown2
Madison2
Lewisville2
Yanceyville2
Advance2
King2
Thomasville2
Elkin2
Reidsville2
Walnut Cove1
Mulberry1
Seagrove1
North Wilkesboro1

Phone companies in 743

162 blocks of numbers in 743 are held by 31 phone companies. The most belong to Inteliquent (38), Ton80 Communications (21) and T-Mobile (14).

A large share, about 73%, belongs to competitive and internet phone carriers; wireless networks hold 19% and local phone and cable companies 7%.

A block’s holder is the company it was first assigned to; numbers can move to other carriers since.

History and overlays

743 went into service in 2016, added to the area of 336.

336 (since 1997) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

116 new exchanges were assigned since 2021, the latest in October 2026.

Calling 743

It’s 12:14 AM Eastern time in 743 right now.

From elsewhere in the U.S., dial 1, 743 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

North Carolina has 10 area codes: 252, 336, 472, 704, 743, 828, 910, 919, 980 and 984.

From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.

Map of the 743 area code

Map of the 743 area code around Greensboro, Winston-Salem and Burlington, North Carolina.

Interactive map © OpenStreetMap contributors

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Questions about 743

Where is area code 743?

In North Carolina, covering Greensboro, Winston-Salem and Burlington and other places across 16 counties.

What time zone is 743 in?

Eastern time. It was 12:14 AM there when this page loaded.

Is 743 an overlay?

Yes. 336 serves the same area, so dial all 10 digits for local calls.

Which phone companies have 743 numbers?

31 companies hold blocks; the most belong to Inteliquent, Ton80 Communications and T-Mobile. About 19% of blocks are wireless.

Is 743 running out of numbers?

Not on record. 116 new exchanges have been assigned since 2021.