Phone numbers in St. Helens, Oregon
St. Helens has 13 phone prefixes in area codes 503, 971.
Biggest holders: Verizon Wireless, CenturyLink / Lumen, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 62%
- Local phone company 15%
- Internet / business phone carrier 15%
- Phone company 8%
Every prefix in St. Helens
Search the first six digits of a number in this list. If it's here, the number started in St. Helens with the carrier shown. If it isn't, check the Oregon page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 503-366 | CenturyLink / Lumen | Local phone company | – |
| 503-369 | AT&T Mobility | Mobile carrier | – |
| 503-396 | Verizon Wireless | Mobile carrier | – |
| 503-397 | CenturyLink / Lumen | Local phone company | – |
| 503-410 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 503-438 | Teleport Communications America | Internet / business phone carrier | – |
| 971-203 | AT&T Mobility | Mobile carrier | 2011 |
| 971-210 | Eltopia Communications | Phone company | – |
| 971-225 | T-Mobile (including Sprint) | Mobile carrier | – |
| 971-363 | T-Mobile (including Sprint) | Mobile carrier | – |
| 971-757 | Verizon Wireless | Mobile carrier | 2016 |
| 971-813 | Verizon Wireless | Mobile carrier | 2014 |
| 971-842 | Fractel | Internet / business phone carrier | 2020 |
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.