Phone numbers in Hutto, Texas
Hutto has 7 phone prefixes in area codes 512, 737.
Biggest holders: Brightspeed Of Texas, Onvoy, Grande Communications Networks. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 14%
- Local phone company 29%
- Internet / business phone carrier 43%
- Phone company 14%
Every prefix in Hutto
Search the first six digits of a number in this list. If it's here, the number started in Hutto with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 512-642 | Grande Communications Networks | Phone company | – |
| 512-759 | Brightspeed Of Texas | Local phone company | – |
| 512-846 | Brightspeed Of Texas | Local phone company | – |
| 737-259 | Level 3 (Lumen) | Internet / business phone carrier | 2019 |
| 737-306 | AT&T Mobility | Mobile carrier | 2021 |
| 737-327 | Onvoy | Internet / business phone carrier | 2020 |
| 737-391 | 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.