Phone numbers in Oak Harbor, Washington
Oak Harbor has 21 phone prefixes in area codes 360, 564.
Biggest holders: Ziply Fiber, Verizon Wireless, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 43%
- Local phone company 29%
- Internet / business phone carrier 29%
Every prefix in Oak Harbor
Search the first six digits of a number in this list. If it's here, the number started in Oak Harbor with the carrier shown. If it isn't, check the Washington page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 360-240 | Ziply Fiber | Local phone company | – |
| 360-246 | Teleport Communications America | Internet / business phone carrier | – |
| 360-257 | Ziply Fiber | Local phone company | – |
| 360-279 | Ziply Fiber | Local phone company | – |
| 360-320 | Verizon Wireless | Mobile carrier | – |
| 360-323 | Onvoy | Internet / business phone carrier | – |
| 360-499 | Verizon Wireless | Mobile carrier | – |
| 360-544 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-632 | AT&T Mobility | Mobile carrier | 2001 |
| 360-639 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-672 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 360-675 | Ziply Fiber | Local phone company | – |
| 360-678 | Ziply Fiber | Local phone company | – |
| 360-679 | Ziply Fiber | Local phone company | – |
| 360-682 | Teleport Communications America | Internet / business phone carrier | – |
| 360-720 | T-Mobile (including Sprint) | Mobile carrier | – |
| 360-914 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 360-929 | Verizon Wireless | Mobile carrier | – |
| 360-969 | AT&T Mobility | Mobile carrier | – |
| 564-549 | Verizon Wireless | Mobile carrier | 2024 |
| 564-676 | TON80 Communications | Internet / business phone carrier | 2021 |
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.