Phone numbers in Tehachapi, California
Tehachapi has 13 phone prefixes in area code 661.
Biggest holders: T-Mobile (including Sprint), AT&T Mobility, AT&T (local phone). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 46%
- Local phone company 23%
- Internet / business phone carrier 23%
- Phone company 8%
Every prefix in Tehachapi
Search the first six digits of a number in this list. If it's here, the number started in Tehachapi with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 661-238 | Bandwidth | Internet / business phone carrier | – |
| 661-300 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 661-357 | Utility Telecom Group | Phone company | – |
| 661-518 | Telnyx | Internet / business phone carrier | 2021 |
| 661-614 | AT&T Mobility | Mobile carrier | 2023 |
| 661-750 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 661-771 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 661-781 | AT&T Mobility | Mobile carrier | 2026 |
| 661-821 | AT&T (local phone) | Local phone company | – |
| 661-822 | AT&T (local phone) | Local phone company | – |
| 661-823 | AT&T (local phone) | Local phone company | – |
| 661-825 | T-Mobile (including Sprint) | Mobile carrier | – |
| 661-972 | AT&T Mobility | 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.