Phone numbers in Grand Ronde, Oregon
Grand Ronde has 4 phone prefixes in area codes 503, 971.
Biggest holders: Onvoy, CenturyLink / Lumen. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 25%
- Internet / business phone carrier 75%
Every prefix in Grand Ronde
Search the first six digits of a number in this list. If it's here, the number started in Grand Ronde with the carrier shown. If it isn't, check the Oregon page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 503-461 | Onvoy | Internet / business phone carrier | 2018 |
| 503-879 | CenturyLink / Lumen | Local phone company | – |
| 971-298 | Onvoy | Internet / business phone carrier | – |
| 971-457 | Onvoy | Internet / business phone carrier | 2023 |
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.