Phone numbers in Charleston, Missouri
Charleston has 5 phone prefixes in area code 573.
Biggest holders: AT&T Mobility, Verizon Wireless, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 60%
- Local phone company 20%
- Internet / business phone carrier 20%
Every prefix in Charleston
Search the first six digits of a number in this list. If it's here, the number started in Charleston with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 573-233 | Verizon Wireless | Mobile carrier | 2001 |
| 573-235 | Onvoy | Internet / business phone carrier | 2024 |
| 573-427 | AT&T Mobility | Mobile carrier | – |
| 573-542 | AT&T Mobility | Mobile carrier | 2015 |
| 573-683 | AT&T (local phone) | Local phone company | – |
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.