Phone numbers in Baytown, Texas
Baytown has 56 phone prefixes in area codes 281, 346, 713, 832.
Biggest holders: Frontier, T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 39%
- Local phone company 29%
- Internet / business phone carrier 32%
Every prefix in Baytown
Search the first six digits of a number in this list. If it's here, the number started in Baytown with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 281-420 | Frontier | Local phone company | – |
| 281-421 | Frontier | Local phone company | – |
| 281-422 | Frontier | Local phone company | – |
| 281-424 | Frontier | Local phone company | – |
| 281-425 | Frontier | Local phone company | – |
| 281-427 | Frontier | Local phone company | – |
| 281-428 | Frontier | Local phone company | – |
| 281-515 | AT&T Mobility | Mobile carrier | 2006 |
| 281-628 | T-Mobile (including Sprint) | Mobile carrier | – |
| 281-663 | Frontier | Local phone company | – |
| 281-683 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 281-691 | Teleport Communications America | Internet / business phone carrier | 2004 |
| 281-707 | Frontier | Local phone company | – |
| 281-708 | Frontier | Local phone company | – |
| 281-739 | AT&T Mobility | Mobile carrier | 2006 |
| 281-834 | Frontier | Local phone company | – |
| 281-837 | Frontier | Local phone company | – |
| 281-838 | Frontier | Local phone company | – |
| 281-839 | Frontier | Local phone company | – |
| 281-868 | Verizon Wireless | Mobile carrier | 2020 |
| 281-917 | Verizon Wireless | Mobile carrier | 2007 |
| 346-216 | MCImetro (Verizon Business) | Internet / business phone carrier | 2015 |
| 346-233 | Onvoy | Internet / business phone carrier | 2016 |
| 346-259 | Teleport Communications America | Internet / business phone carrier | 2017 |
| 346-263 | AT&T Mobility | Mobile carrier | 2017 |
| 346-292 | Level 3 (Lumen) | Internet / business phone carrier | 2017 |
| 346-431 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 346-472 | Telnyx | Internet / business phone carrier | 2021 |
| 346-533 | Skyetel | Internet / business phone carrier | 2021 |
| 346-548 | Verizon Wireless | Mobile carrier | 2022 |
| 346-549 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 346-602 | AT&T Mobility | Mobile carrier | 2022 |
| 346-630 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 346-660 | Onvoy | Internet / business phone carrier | 2021 |
| 346-671 | AT&T Mobility | Mobile carrier | 2023 |
| 346-677 | Fractel | Internet / business phone carrier | 2020 |
| 346-710 | Onvoy | Internet / business phone carrier | 2019 |
| 346-737 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 346-749 | Verizon Wireless | Mobile carrier | 2023 |
| 346-855 | Fractel | Internet / business phone carrier | 2021 |
| 346-977 | Fractel | Internet / business phone carrier | 2019 |
| 713-424 | Onvoy | Internet / business phone carrier | 2022 |
| 713-903 | Onvoy | Internet / business phone carrier | 2019 |
| 832-262 | Verizon Wireless | Mobile carrier | 2003 |
| 832-339 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
| 832-414 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 832-514 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 832-556 | Frontier | Local phone company | – |
| 832-572 | AT&T Mobility | Mobile carrier | 2010 |
| 832-597 | T-Mobile (including Sprint) | Mobile carrier | – |
| 832-629 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
| 832-695 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 832-784 | AT&T Mobility | Mobile carrier | 2008 |
| 832-806 | Teleport Communications America | Internet / business phone carrier | 2014 |
| 832-926 | Frontier | Local phone company | – |
| 832-984 | Level 3 (Lumen) | Internet / business phone carrier | – |
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.