Phone numbers in St. Robert, Missouri
St. Robert has 4 phone prefixes in area code 573.
Biggest holders: CenturyLink / Lumen, Verizon Wireless, Fidelity Cablevision. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 50%
- Internet / business phone carrier 25%
Every prefix in St. Robert
Search the first six digits of a number in this list. If it's here, the number started in St. Robert with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 573-232 | CenturyLink / Lumen | Local phone company | 2001 |
| 573-336 | CenturyLink / Lumen | Local phone company | – |
| 573-337 | Verizon Wireless | Mobile carrier | – |
| 573-451 | Fidelity Cablevision | Internet / business phone carrier | 2002 |
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.