Phone numbers in Flat River, Missouri
Flat River has 9 phone prefixes in area codes 235, 573.
Biggest holders: AT&T (local phone), Verizon Wireless, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 44%
- Local phone company 33%
- Internet / business phone carrier 22%
Every prefix in Flat River
Search the first six digits of a number in this list. If it's here, the number started in Flat River with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 235-210 | Onvoy | Internet / business phone carrier | 2025 |
| 573-315 | Verizon Wireless | Mobile carrier | – |
| 573-327 | AT&T (local phone) | Local phone company | – |
| 573-430 | AT&T Mobility | Mobile carrier | 2016 |
| 573-431 | AT&T (local phone) | Local phone company | – |
| 573-454 | Bandwidth | Internet / business phone carrier | – |
| 573-516 | Verizon Wireless | Mobile carrier | 2018 |
| 573-518 | AT&T (local phone) | Local phone company | – |
| 573-952 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
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.