Phone numbers in Tomball, Texas
Tomball has 48 phone prefixes in area codes 281, 346, 713, 832.
Biggest holders: AT&T (local phone), Onvoy, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 8%
- Local phone company 40%
- Internet / business phone carrier 48%
- Paging service 2%
- Phone company 2%
Every prefix in Tomball
Search the first six digits of a number in this list. If it's here, the number started in Tomball with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 281-205 | Teleport Communications America | Internet / business phone carrier | – |
| 281-251 | AT&T (local phone) | Local phone company | – |
| 281-255 | AT&T (local phone) | Local phone company | – |
| 281-257 | AT&T (local phone) | Local phone company | – |
| 281-290 | AT&T (local phone) | Local phone company | – |
| 281-320 | AT&T (local phone) | Local phone company | – |
| 281-351 | AT&T (local phone) | Local phone company | – |
| 281-357 | AT&T (local phone) | Local phone company | – |
| 281-370 | AT&T (local phone) | Local phone company | – |
| 281-374 | AT&T (local phone) | Local phone company | – |
| 281-376 | AT&T (local phone) | Local phone company | – |
| 281-378 | AT&T (local phone) | Local phone company | – |
| 281-379 | AT&T (local phone) | Local phone company | – |
| 281-401 | AT&T (local phone) | Local phone company | – |
| 281-516 | AT&T (local phone) | Local phone company | – |
| 281-547 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 281-655 | AT&T (local phone) | Local phone company | – |
| 281-803 | Grande Communications Networks | Phone company | – |
| 281-826 | AT&T (local phone) | Local phone company | – |
| 346-225 | AT&T Mobility | Mobile carrier | 2015 |
| 346-236 | AT&T Mobility | Mobile carrier | 2016 |
| 346-246 | AT&T (local phone) | Local phone company | 2017 |
| 346-273 | AT&T Mobility | Mobile carrier | 2017 |
| 346-336 | Charter / Spectrum | Internet / business phone carrier | 2016 |
| 346-367 | AT&T Mobility | Mobile carrier | 2018 |
| 346-416 | Teleport Communications America | Internet / business phone carrier | 2020 |
| 346-468 | Vonage America | Internet / business phone carrier | 2021 |
| 346-534 | Onvoy | Internet / business phone carrier | 2021 |
| 346-572 | Bandwidth | Internet / business phone carrier | 2022 |
| 346-598 | Onvoy | Internet / business phone carrier | 2022 |
| 346-645 | Onvoy | Internet / business phone carrier | 2020 |
| 346-695 | Onvoy | Internet / business phone carrier | 2023 |
| 346-753 | Commio | Internet / business phone carrier | 2023 |
| 346-765 | Onvoy | Internet / business phone carrier | 2024 |
| 346-794 | Onvoy | Internet / business phone carrier | 2024 |
| 346-808 | Bandwidth | Internet / business phone carrier | 2015 |
| 346-913 | Onvoy | Internet / business phone carrier | 2025 |
| 713-810 | Onvoy | Internet / business phone carrier | 2021 |
| 832-422 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 832-534 | AT&T (local phone) | Local phone company | 2010 |
| 832-559 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 832-639 | Level 3 (Lumen) | Internet / business phone carrier | 2013 |
| 832-697 | Spok | Paging service | 2001 |
| 832-698 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 832-717 | AT&T (local phone) | Local phone company | – |
| 832-761 | Peerless Network Of Texas | Internet / business phone carrier | 2013 |
| 832-843 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 832-953 | Comcast | Internet / business phone carrier | 2014 |
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.