Phone numbers in Potosi, Missouri
Potosi has 6 phone prefixes in area code 573.
Biggest holders: Verizon Wireless, Brightspeed Of East Missouri, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 67%
- Local phone company 33%
Every prefix in Potosi
Search the first six digits of a number in this list. If it's here, the number started in Potosi with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 573-210 | Verizon Wireless | Mobile carrier | – |
| 573-274 | Verizon Wireless | Mobile carrier | 2025 |
| 573-436 | Brightspeed Of East Missouri | Local phone company | – |
| 573-438 | Brightspeed Of East Missouri | Local phone company | – |
| 573-650 | Verizon Wireless | Mobile carrier | 2021 |
| 573-854 | AT&T Mobility | Mobile carrier | 2006 |
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.