Phone numbers in Smithville, Texas
Smithville has 8 phone prefixes in area codes 512, 737.
Biggest holders: AT&T (local phone), AT&T Enterprises, Matrix Telecom, Llc. S/i/i Tnci. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 25%
- Internet / business phone carrier 38%
- Phone company 12%
Every prefix in Smithville
Search the first six digits of a number in this list. If it's here, the number started in Smithville with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 512-237 | AT&T (local phone) | Local phone company | – |
| 512-360 | AT&T (local phone) | Local phone company | – |
| 512-575 | AT&T Enterprises | Phone company | 2011 |
| 512-798 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 737-302 | MetroPCS (T-Mobile) | Mobile carrier | 2016 |
| 737-413 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 737-677 | Onvoy | Internet / business phone carrier | 2020 |
| 737-762 | TON80 Communications | Internet / business phone carrier | 2021 |
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.