Phone numbers in Sunol, California
Sunol has 9 phone prefixes in area code 925.
Biggest holders: Level 3 (Lumen), T-Mobile (including Sprint), Teleport Communications America. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 22%
- Local phone company 11%
- Internet / business phone carrier 56%
- Phone company 11%
Every prefix in Sunol
Search the first six digits of a number in this list. If it's here, the number started in Sunol with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 925-233 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 925-319 | T-Mobile (including Sprint) | Mobile carrier | – |
| 925-568 | Teleport Communications America | Internet / business phone carrier | – |
| 925-663 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 925-789 | Verizon Wireless | Mobile carrier | – |
| 925-835 | Tpx Communications | Internet / business phone carrier | – |
| 925-860 | Onvoy | Internet / business phone carrier | – |
| 925-862 | AT&T (local phone) | Local phone company | – |
| 925-990 | Utility Telecom Group | Phone company | – |
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.