Phone numbers in Lewistown, Missouri
Lewistown has 3 phone prefixes in area code 573.
Biggest holders: Mark Twain Communications, Onvoy, Brightspeed Of East Missouri. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 33%
- Internet / business phone carrier 33%
- Phone company 33%
Every prefix in Lewistown
Search the first six digits of a number in this list. If it's here, the number started in Lewistown with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 573-215 | Mark Twain Communications | Phone company | – |
| 573-490 | Onvoy | Internet / business phone carrier | – |
| 573-497 | Brightspeed Of East Missouri | 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.