Phone numbers in Monroe, Georgia
Monroe has 10 phone prefixes in area codes 470, 678, 770, 943.
Biggest holders: Onvoy, Windstream Georgia Communications, MetroPCS (T-Mobile). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 30%
- Local phone company 30%
- Internet / business phone carrier 40%
Every prefix in Monroe
Search the first six digits of a number in this list. If it's here, the number started in Monroe with the carrier shown. If it isn't, check the Georgia page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 470-570 | Onvoy | Internet / business phone carrier | 2019 |
| 470-801 | Onvoy | Internet / business phone carrier | 2021 |
| 678-345 | MetroPCS (T-Mobile) | Mobile carrier | 2005 |
| 678-635 | MCImetro (Verizon Business) | Internet / business phone carrier | 2006 |
| 770-207 | Windstream Georgia Communications | Local phone company | – |
| 770-266 | Windstream Georgia Communications | Local phone company | – |
| 770-267 | Windstream Georgia Communications | Local phone company | – |
| 770-780 | MetroPCS (T-Mobile) | Mobile carrier | 2004 |
| 943-234 | Onvoy | Internet / business phone carrier | 2022 |
| 943-254 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
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. Source: NANPA central office code records, 2026-10-10.