Phone numbers in Soledad, California
Soledad has 8 phone prefixes in area code 831.
Biggest holders: AT&T Mobility, Level 3 (Lumen), IP Horizon. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 12%
- Internet / business phone carrier 62%
Every prefix in Soledad
Search the first six digits of a number in this list. If it's here, the number started in Soledad with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 831-223 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 831-237 | IP Horizon | Internet / business phone carrier | – |
| 831-260 | AT&T Mobility | Mobile carrier | 2022 |
| 831-292 | AT&T Mobility | Mobile carrier | 2019 |
| 831-315 | Peerless Network Of California | Internet / business phone carrier | 2016 |
| 831-677 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 831-678 | AT&T (local phone) | Local phone company | – |
| 831-808 | Onvoy | Internet / business phone carrier | 2023 |
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.