Area code 864: where it is and who calls from it
Area code 864 is in South Carolina.
South Carolina (The Upstate, including Greenville, Spartanburg, Anderson, Clemson, and most of northwestern South Carolina)
| Where | South Carolina |
|---|---|
| Time zone | Eastern Time ยท local time |
| In service since | 1995 |
| Overlay | Yes, with 821 |
| Prefixes assigned | 784 of 792 possible (99%) |
Overlay: 864 covers the same area as 821. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 864 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 864, with how many prefixes each has.
Plus 6 smaller rate centers.
Who holds 864 numbers
- Mobile carrier 30%
- Local phone company 29%
- Internet / business phone carrier 34%
- Paging service 1%
- Phone company 6%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| AT&T (local phone) | Local phone company | 173 | 22% |
| Verizon Wireless | Mobile carrier | 95 | 12% |
| Windstream (PAETEC) | Internet / business phone carrier | 78 | 10% |
| AT&T Mobility | Mobile carrier | 70 | 9% |
| Onvoy | Internet / business phone carrier | 65 | 8% |
| T-Mobile (including Sprint) | Mobile carrier | 63 | 8% |
| Level 3 (Lumen) | Internet / business phone carrier | 34 | 4% |
| Bandwidth | Internet / business phone carrier | 22 | 3% |
| Charter / Spectrum | Internet / business phone carrier | 18 | 2% |
| Brightspeed Of South Carolina | Local phone company | 16 | 2% |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number.
States served: South Carolina.
Other area codes in South Carolina
Got a call from 864?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 864 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.