Phone numbers in Klamath Falls, Oregon
Klamath Falls has 25 phone prefixes in area codes 458, 541.
Biggest holders: CenturyLink / Lumen, Verizon Wireless, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 56%
- Local phone company 32%
- Internet / business phone carrier 8%
- Phone company 4%
Every prefix in Klamath Falls
Search the first six digits of a number in this list. If it's here, the number started in Klamath Falls with the carrier shown. If it isn't, check the Oregon page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 458-232 | MetroPCS (T-Mobile) | Mobile carrier | 2017 |
| 458-254 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 458-290 | Verizon Wireless | Mobile carrier | 2022 |
| 458-327 | Verizon Wireless | Mobile carrier | 2024 |
| 458-354 | AT&T Mobility | Mobile carrier | 2025 |
| 541-205 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 541-238 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 541-273 | CenturyLink / Lumen | Local phone company | – |
| 541-274 | Verizon Wireless | Mobile carrier | 2002 |
| 541-281 | UScellular | Mobile carrier | – |
| 541-331 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 541-363 | AT&T Mobility | Mobile carrier | 2002 |
| 541-539 | AT&T Mobility | Mobile carrier | 2005 |
| 541-591 | Verizon Wireless | Mobile carrier | – |
| 541-810 | UScellular | Mobile carrier | – |
| 541-850 | CenturyLink / Lumen | Local phone company | – |
| 541-851 | CenturyLink / Lumen | Local phone company | – |
| 541-880 | CenturyLink / Lumen | Local phone company | – |
| 541-882 | CenturyLink / Lumen | Local phone company | – |
| 541-883 | CenturyLink / Lumen | Local phone company | – |
| 541-884 | CenturyLink / Lumen | Local phone company | – |
| 541-885 | CenturyLink / Lumen | Local phone company | – |
| 541-887 | Cal-ore Communications | Phone company | 2004 |
| 541-891 | Verizon Wireless | Mobile carrier | – |
| 541-892 | UScellular | Mobile 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.