Phone numbers in Elgin, Texas
Elgin has 13 phone prefixes in area codes 512, 737.
Biggest holders: Onvoy, AT&T (local phone), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 31%
- Local phone company 15%
- Internet / business phone carrier 46%
- Phone company 8%
Every prefix in Elgin
Search the first six digits of a number in this list. If it's here, the number started in Elgin with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 512-229 | Tpx Communications | Internet / business phone carrier | – |
| 512-281 | AT&T (local phone) | Local phone company | – |
| 512-285 | AT&T (local phone) | Local phone company | – |
| 512-661 | Verizon Wireless | Mobile carrier | – |
| 737-200 | Onvoy | Internet / business phone carrier | 2015 |
| 737-232 | T-Mobile (including Sprint) | Mobile carrier | 2017 |
| 737-233 | Verizon Wireless | Mobile carrier | 2018 |
| 737-321 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 737-338 | Onvoy | Internet / business phone carrier | 2020 |
| 737-385 | Onvoy | Internet / business phone carrier | 2024 |
| 737-416 | IP Horizon | Internet / business phone carrier | 2025 |
| 737-666 | Foremost Telecommunications | Phone company | 2013 |
| 737-786 | Fractel | 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.