Phone numbers in Justin, Texas
Justin has 9 phone prefixes in area code 940.
Biggest holders: Frontier, Grande Communications Networks, Bandwidth. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 33%
- Internet / business phone carrier 33%
- Phone company 33%
Every prefix in Justin
Search the first six digits of a number in this list. If it's here, the number started in Justin with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 940-242 | Frontier | Local phone company | – |
| 940-278 | Bandwidth | Internet / business phone carrier | 2018 |
| 940-339 | Grande Communications Networks | Phone company | – |
| 940-373 | Bandwidth | Internet / business phone carrier | 2019 |
| 940-441 | Grande Communications Networks | Phone company | – |
| 940-526 | Frontier | Local phone company | 2022 |
| 940-648 | Frontier | Local phone company | – |
| 940-724 | Grande Communications Networks | Phone company | – |
| 940-946 | Fractel | Internet / business phone carrier | 2020 |
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.