Phone numbers in Portage Des Sioux, Missouri
Portage Des Sioux has 7 phone prefixes in area code 636.
Biggest holders: AT&T (local phone), Onvoy, Windstream (PAETEC). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 14%
- Local phone company 43%
- Internet / business phone carrier 43%
Every prefix in Portage Des Sioux
Search the first six digits of a number in this list. If it's here, the number started in Portage Des Sioux with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 636-400 | Onvoy | Internet / business phone carrier | – |
| 636-425 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 636-426 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 636-434 | AT&T (local phone) | Local phone company | 2001 |
| 636-648 | Terra Nova Telecom | Internet / business phone carrier | – |
| 636-753 | AT&T (local phone) | Local phone company | – |
| 636-899 | 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.