Phone numbers in Dolores, Texas
Dolores has 9 phone prefixes in area code 956.
Biggest holders: AT&T Mobility, Alenco Communications. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 56%
- Phone company 44%
Every prefix in Dolores
Search the first six digits of a number in this list. If it's here, the number started in Dolores with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 956-282 | AT&T Mobility | Mobile carrier | 2015 |
| 956-327 | AT&T Mobility | Mobile carrier | 2022 |
| 956-417 | Alenco Communications | Phone company | – |
| 956-418 | Alenco Communications | Phone company | – |
| 956-419 | Alenco Communications | Phone company | – |
| 956-526 | AT&T Mobility | Mobile carrier | 2020 |
| 956-799 | Alenco Communications | Phone company | – |
| 956-932 | AT&T Mobility | Mobile carrier | 2024 |
| 956-962 | AT&T Mobility | Mobile carrier | 2017 |
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.