Phone numbers in Rainier, Oregon
Rainier has 6 phone prefixes in area codes 503, 971.
Biggest holders: Bandwidth, Teleport Communications America, CenturyLink / Lumen. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 17%
- Internet / business phone carrier 67%
- Phone company 17%
Every prefix in Rainier
Search the first six digits of a number in this list. If it's here, the number started in Rainier with the carrier shown. If it isn't, check the Oregon page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 503-395 | Teleport Communications America | Internet / business phone carrier | – |
| 503-556 | CenturyLink / Lumen | Local phone company | – |
| 971-251 | Bandwidth | Internet / business phone carrier | 2012 |
| 971-328 | Bandwidth | Internet / business phone carrier | 2015 |
| 971-668 | TON80 Communications | Internet / business phone carrier | 2022 |
| 971-899 | Invoxio Incorporated | Phone company | 2018 |
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.