Phone numbers in Tillamook, Oregon
Tillamook has 18 phone prefixes in area codes 503, 971.
Biggest holders: T-Mobile (including Sprint), Level 3 (Lumen), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 61%
- Local phone company 11%
- Internet / business phone carrier 28%
Every prefix in Tillamook
Search the first six digits of a number in this list. If it's here, the number started in Tillamook with the carrier shown. If it isn't, check the Oregon page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 503-354 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 503-374 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 503-457 | Verizon Wireless | Mobile carrier | – |
| 503-801 | AT&T Mobility | Mobile carrier | – |
| 503-812 | Verizon Wireless | Mobile carrier | – |
| 503-815 | CenturyLink / Lumen | Local phone company | – |
| 503-842 | CenturyLink / Lumen | Local phone company | – |
| 971-341 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 971-354 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
| 971-389 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 971-408 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 971-425 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 971-456 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 971-488 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 971-498 | Onvoy | Internet / business phone carrier | 2024 |
| 971-523 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 971-527 | Onvoy | Internet / business phone carrier | 2025 |
| 971-977 | 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.