Phone numbers in Richmndbch, Washington
Richmndbch has 19 phone prefixes in area code 206.
Biggest holders: Onvoy, Ziply Fiber, MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 16%
- Local phone company 16%
- Internet / business phone carrier 68%
Every prefix in Richmndbch
Search the first six digits of a number in this list. If it's here, the number started in Richmndbch with the carrier shown. If it isn't, check the Washington page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 206-237 | Onvoy | Internet / business phone carrier | – |
| 206-289 | Teleport Communications America | Internet / business phone carrier | – |
| 206-401 | MCImetro (Verizon Business) | Internet / business phone carrier | 2016 |
| 206-497 | Onvoy | Internet / business phone carrier | 2006 |
| 206-533 | Ziply Fiber | Local phone company | – |
| 206-542 | Ziply Fiber | Local phone company | – |
| 206-546 | Ziply Fiber | Local phone company | – |
| 206-569 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 206-589 | Onvoy | Internet / business phone carrier | 2020 |
| 206-608 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 206-610 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 206-629 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 206-647 | Onvoy | Internet / business phone carrier | 2022 |
| 206-745 | Onvoy | Internet / business phone carrier | – |
| 206-761 | AT&T Mobility | Mobile carrier | 2021 |
| 206-800 | Peerless Network Of Washington | Internet / business phone carrier | 2014 |
| 206-801 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 206-828 | Onvoy | Internet / business phone carrier | 2022 |
| 206-984 | 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.