821 area code
Where the 821 area code is, its overlay and how to dial a +1 821 number from anywhere.
The 821 area code is in South Carolina, United States (Eastern (ET)). To call from abroad: +1 821 555-0123. It is an overlay, so all 10 digits are dialled.
The 821 area code is a geographic North American Numbering Plan (NANP) code covering South Carolina. It has been in service since 04-Oct-2022 and sits in the Eastern (ET) time zone.
How to dial a 821 number
+1 821 555-01231 821 555-0123821 555-0123Other South Carolina area codes
Frequently asked questions
Where is the 821 area code?
The 821 area code is in South Carolina, United States (Eastern (ET)).
Is 821 an overlay area code?
Yes. 821 overlays the same region as 864, so callers dial all 10 digits.
Do I have to dial 10 digits for 821?
Yes — dial the area code plus the seven-digit number.
How do I call a 821 number from another country?
Dial your exit code (or +), then 1, then 821, then the number: +1 821 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 821 number does not pinpoint a street or ZIP code.
Number holders in area code 821
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 56 prefixes are in use in 821, shared by 11 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| New Cingular Wireless PCS, LLC | 24 | 43% |
| 14 | 25% | |
| Onvoy, LLC | 9 | 16% |
| Onvoy Spectrum, LLC | 2 | 4% |
| Leap Telecom, LLC | 1 | 2% |
| Cellco Partnership Dba Verizon Wireless | 1 | 2% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
Complaints about 821 numbers
- Reports to the FTC, last 30 days
- 11
- Recorded messages or robocalls
- 64%
- Rank among area codes
- #406 of 670
- Most reported subjects
- Other (6)
- Reducing your debt (credit cards, mortgage, student loans) (3)
- Lotteries, prizes & sweepstakes (1)
Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.
Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).
All US area codes United States +1 Map of area code 821 — cities & rate centres