Phone numbers in Belfair, Washington
Belfair has 9 phone prefixes in area codes 360, 564.
Biggest holders: Level 3 (Lumen), Onvoy, CenturyLink / Lumen. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 22%
- Local phone company 22%
- Internet / business phone carrier 56%
Every prefix in Belfair
Search the first six digits of a number in this list. If it's here, the number started in Belfair with the carrier shown. If it isn't, check the Washington page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 360-205 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-227 | Onvoy | Internet / business phone carrier | – |
| 360-233 | Teleport Communications America | Internet / business phone carrier | – |
| 360-275 | CenturyLink / Lumen | Local phone company | – |
| 360-277 | CenturyLink / Lumen | Local phone company | – |
| 360-552 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-801 | Verizon Wireless | Mobile carrier | – |
| 564-261 | Verizon Wireless | Mobile carrier | 2025 |
| 564-546 | Onvoy | Internet / business phone carrier | 2020 |
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.