Phone numbers in Vashon, Washington
Vashon has 8 phone prefixes in area code 206.
Biggest holders: Onvoy, CenturyLink / Lumen, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 12%
- Local phone company 25%
- Internet / business phone carrier 62%
Every prefix in Vashon
Search the first six digits of a number in this list. If it's here, the number started in Vashon with the carrier shown. If it isn't, check the Washington page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 206-259 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 206-408 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 206-463 | CenturyLink / Lumen | Local phone company | – |
| 206-567 | CenturyLink / Lumen | Local phone company | – |
| 206-603 | Onvoy | Internet / business phone carrier | – |
| 206-738 | Onvoy | Internet / business phone carrier | – |
| 206-857 | AT&T Mobility | Mobile carrier | 2025 |
| 206-875 | Onvoy | Internet / business phone carrier | – |
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.