Area code 678: where it is and who calls from it
Area code 678 is in Georgia.
Georgia (Metro Atlanta)
| Where | Georgia |
|---|---|
| Time zone | Eastern Time ยท local time |
| In service since | 1998 |
| Overlay | Yes, with 404, 470, 770, 943 |
| Prefixes assigned | 785 of 792 possible (99%) |
Overlay: 678 covers the same area as 404, 470, 770, 943. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 678 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 678, with how many prefixes each has.
Who holds 678 numbers
- Mobile carrier 26%
- Local phone company 17%
- Internet / business phone carrier 54%
- Phone company 3%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| Windstream (PAETEC) | Internet / business phone carrier | 159 | 20% |
| AT&T (local phone) | Local phone company | 122 | 16% |
| Level 3 (Lumen) | Internet / business phone carrier | 120 | 15% |
| MCImetro (Verizon Business) | Internet / business phone carrier | 84 | 11% |
| T-Mobile (including Sprint) | Mobile carrier | 63 | 8% |
| MetroPCS (T-Mobile) | Mobile carrier | 56 | 7% |
| AT&T Mobility | Mobile carrier | 48 | 6% |
| Verizon Wireless | Mobile carrier | 36 | 5% |
| Teleport Communications America | Internet / business phone carrier | 23 | 3% |
| Onvoy | Internet / business phone carrier | 21 | 3% |
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: Georgia.
Other area codes in Georgia
229 404 470 478 706 762 770 912 943
Got a call from 678?
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 678 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.