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Oak Ridge, NC Area Codes
Oak Ridge, North Carolina (population 7,896) uses area codes 336 and 743.
Oak Ridge has no telephone exchange of its own in NANPA records; it is served by the Summerfield exchange about 8.9 km away.
Carriers with Oak Ridge numbers
12 prefixes are assigned to the Summerfield exchange: 0% mobile, 58% VoIP and cable, 42% landline.
| Carrier | Prefixes |
|---|---|
| Paetec Itel | 2 |
| Southern Bell Tel & Tel | 2 |
| Bandwidth | 2 |
| Onvoy (Sinch) | 2 |
| AT&T (Teleport) | 1 |
| Lumen (Level 3) | 1 |
| Ton80 Communications | 1 |
| Telnyx | 1 |
Area codes used in Oak Ridge
| Area code | Prefixes serving Oak Ridge | Main carriers in this code |
|---|---|---|
| 336 | 6 | Southern Bell Tel & Tel, Verizon Wireless, T-Mobile |
| 743 | 6 | Onvoy (Sinch), Ton80 Communications, Verizon Wireless |
Oak Ridge phone number prefixes
Numbers starting with these first six digits were originally assigned to the Summerfield exchange.
336-298AT&T (Teleport)336-441Lumen (Level 3)336-485Paetec Itel336-560Paetec Itel336-643Southern Bell Tel & Tel336-644Southern Bell Tel & Tel743-203Bandwidth743-228Onvoy (Sinch)743-233Bandwidth743-278Onvoy (Sinch)743-439Ton80 Communications743-777Telnyx
Nearby cities in area code 336
- Greensboro
- Winston-Salem
- High Point
- Burlington
- Kernersville
- Asheboro
- Thomasville
- Clemmons
- Lexington
- Graham
- Eden
- Reidsville
Questions
- What is the area code for Oak Ridge, NC?
- Oak Ridge uses 2 area codes: 336 and 743. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is Oak Ridge in?
- Oak Ridge is in the Eastern time zone.