Phone numbers in Fallbrook, California
Fallbrook has 17 phone prefixes in area codes 442, 760.
Biggest holders: AT&T (local phone), Bandwidth, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 18%
- Local phone company 24%
- Internet / business phone carrier 53%
- Phone company 6%
Every prefix in Fallbrook
Search the first six digits of a number in this list. If it's here, the number started in Fallbrook with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 442-207 | Bandwidth | Internet / business phone carrier | 2016 |
| 442-254 | Onvoy | Internet / business phone carrier | 2014 |
| 442-374 | Commio | Internet / business phone carrier | 2022 |
| 442-378 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 442-444 | Onvoy | Internet / business phone carrier | – |
| 760-236 | North County Communication | Phone company | – |
| 760-451 | AT&T (local phone) | Local phone company | – |
| 760-468 | AT&T Mobility | Mobile carrier | – |
| 760-626 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 760-645 | Charter / Spectrum | Internet / business phone carrier | – |
| 760-689 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 760-695 | Teleport Communications America | Internet / business phone carrier | – |
| 760-723 | AT&T (local phone) | Local phone company | – |
| 760-728 | AT&T (local phone) | Local phone company | – |
| 760-731 | AT&T (local phone) | Local phone company | – |
| 760-990 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 760-999 | Bandwidth | Internet / business phone 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.