Phone numbers in Los Fresnos, Texas
Los Fresnos has 11 phone prefixes in area code 956.
Biggest holders: Verizon Wireless, AT&T (local phone), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 64%
- Local phone company 18%
- Internet / business phone carrier 18%
Every prefix in Los Fresnos
Search the first six digits of a number in this list. If it's here, the number started in Los Fresnos with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 956-233 | AT&T (local phone) | Local phone company | – |
| 956-238 | Verizon Wireless | Mobile carrier | 2003 |
| 956-254 | AT&T (local phone) | Local phone company | 2007 |
| 956-303 | Onvoy | Internet / business phone carrier | – |
| 956-374 | Verizon Wireless | Mobile carrier | 2017 |
| 956-410 | Verizon Wireless | Mobile carrier | 2013 |
| 956-434 | Stpcs Joint Venture | Mobile carrier | 2002 |
| 956-512 | Verizon Wireless | Mobile carrier | 2026 |
| 956-556 | Verizon Wireless | Mobile carrier | 2020 |
| 956-674 | Boost / Virgin Mobile | Mobile carrier | 2022 |
| 956-953 | Onvoy | Internet / business phone carrier | 2024 |
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.