Phone numbers in Oakville, Missouri
Oakville has 13 phone prefixes in area codes 314, 557.
Biggest holders: Onvoy, AT&T (local phone), MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 15%
- Internet / business phone carrier 69%
- Phone company 15%
Every prefix in Oakville
Search the first six digits of a number in this list. If it's here, the number started in Oakville with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 314-293 | AT&T (local phone) | Local phone company | – |
| 314-334 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 314-375 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 314-380 | Onvoy | Internet / business phone carrier | – |
| 314-464 | Onvoy | Internet / business phone carrier | 2020 |
| 314-470 | Onvoy | Internet / business phone carrier | 2020 |
| 314-549 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 314-636 | Leap Telecom | Phone company | 2023 |
| 314-794 | Onvoy | Internet / business phone carrier | 2021 |
| 314-846 | AT&T (local phone) | Local phone company | – |
| 314-988 | Fractel | Internet / business phone carrier | 2022 |
| 557-207 | FIVE9 | Phone company | 2023 |
| 557-258 | Onvoy | Internet / business phone carrier | 2026 |
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.