Phone numbers in Denton, Texas
Denton has 81 phone prefixes in area codes 817, 940.
Biggest holders: Frontier, AT&T Mobility, Grande Communications Networks. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 38%
- Local phone company 25%
- Internet / business phone carrier 26%
- Paging service 1%
- Phone company 10%
Every prefix in Denton
Search the first six digits of a number in this list. If it's here, the number started in Denton with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 817-403 | Verizon Wireless | Mobile carrier | – |
| 817-997 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 940-205 | AT&T Mobility | Mobile carrier | 2012 |
| 940-206 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 940-208 | AT&T Mobility | Mobile carrier | 2015 |
| 940-218 | Charter / Spectrum | Internet / business phone carrier | 2013 |
| 940-220 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 940-222 | MCImetro (Verizon Business) | Internet / business phone carrier | 2011 |
| 940-230 | AT&T Mobility | Mobile carrier | – |
| 940-231 | AT&T Mobility | Mobile carrier | – |
| 940-239 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 940-243 | Frontier | Local phone company | – |
| 940-252 | Bandwidth | Internet / business phone carrier | 2018 |
| 940-268 | AT&T Mobility | Mobile carrier | 2010 |
| 940-271 | Grande Communications Networks | Phone company | – |
| 940-272 | Grande Communications Networks | Phone company | – |
| 940-281 | Twilio | Internet / business phone carrier | 2024 |
| 940-287 | Bandwidth | Internet / business phone carrier | 2018 |
| 940-288 | Shelcomm | Phone company | 2018 |
| 940-293 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 940-297 | Frontier | Local phone company | – |
| 940-299 | AT&T Mobility | Mobile carrier | 2020 |
| 940-300 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 940-304 | Verizon Wireless | Mobile carrier | 2016 |
| 940-307 | MCImetro (Verizon Business) | Internet / business phone carrier | 2015 |
| 940-312 | AT&T (local phone) | Local phone company | 2006 |
| 940-315 | Verizon Wireless | Mobile carrier | 2015 |
| 940-320 | Frontier | Local phone company | – |
| 940-323 | Frontier | Local phone company | – |
| 940-331 | Bandwidth | Internet / business phone carrier | 2019 |
| 940-334 | Boost / Virgin Mobile | Mobile carrier | 2021 |
| 940-349 | Frontier | Local phone company | – |
| 940-354 | Onvoy | Internet / business phone carrier | 2023 |
| 940-364 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 940-367 | AT&T Mobility | Mobile carrier | – |
| 940-368 | AT&T Mobility | Mobile carrier | – |
| 940-369 | Frontier | Local phone company | – |
| 940-377 | AT&T Mobility | Mobile carrier | 2024 |
| 940-380 | Frontier | Local phone company | – |
| 940-381 | Frontier | Local phone company | – |
| 940-382 | Frontier | Local phone company | – |
| 940-383 | Frontier | Local phone company | – |
| 940-384 | Frontier | Local phone company | – |
| 940-387 | Frontier | Local phone company | – |
| 940-390 | AT&T Mobility | Mobile carrier | – |
| 940-391 | AT&T Mobility | Mobile carrier | – |
| 940-395 | AT&T Mobility | Mobile carrier | – |
| 940-407 | AT&T Mobility | Mobile carrier | 2025 |
| 940-413 | Onvoy | Internet / business phone carrier | 2026 |
| 940-435 | Charter / Spectrum | Internet / business phone carrier | 2007 |
| 940-442 | Grande Communications Networks | Phone company | – |
| 940-453 | Verizon Wireless | Mobile carrier | – |
| 940-465 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 940-483 | Frontier | Local phone company | – |
| 940-484 | Frontier | Local phone company | – |
| 940-493 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 940-514 | Charter / Spectrum | Internet / business phone carrier | 2016 |
| 940-535 | Grande Communications Networks | Phone company | – |
| 940-536 | Grande Communications Networks | Phone company | – |
| 940-565 | Frontier | Local phone company | – |
| 940-566 | Frontier | Local phone company | – |
| 940-591 | Frontier | Local phone company | – |
| 940-594 | T-Mobile (including Sprint) | Mobile carrier | – |
| 940-595 | T-Mobile (including Sprint) | Mobile carrier | – |
| 940-597 | T-Mobile (including Sprint) | Mobile carrier | – |
| 940-600 | AT&T Mobility | Mobile carrier | 2011 |
| 940-629 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 940-703 | AT&T Mobility | Mobile carrier | 2013 |
| 940-722 | Spok | Paging service | 2001 |
| 940-735 | AT&T Mobility | Mobile carrier | – |
| 940-758 | Fractel | Internet / business phone carrier | 2020 |
| 940-765 | AT&T Mobility | Mobile carrier | – |
| 940-783 | Teleport Communications America | Internet / business phone carrier | – |
| 940-800 | Onvoy | Internet / business phone carrier | 2017 |
| 940-808 | Charter / Spectrum | Internet / business phone carrier | 2006 |
| 940-827 | Grande Communications Networks | Phone company | – |
| 940-843 | Skyetel | Internet / business phone carrier | 2021 |
| 940-891 | Frontier | Local phone company | – |
| 940-898 | Frontier | Local phone company | – |
| 940-977 | Fractel | Internet / business phone carrier | 2020 |
| 940-999 | Foremost Telecommunications | Phone company | 2010 |
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.