Phone numbers in Mansfield, Texas
Mansfield has 21 phone prefixes in area codes 682, 817.
Biggest holders: Onvoy, AT&T (local phone), Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 24%
- Internet / business phone carrier 71%
- Phone company 5%
Every prefix in Mansfield
Search the first six digits of a number in this list. If it's here, the number started in Mansfield with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 682-222 | Onvoy | Internet / business phone carrier | – |
| 682-322 | MCImetro (Verizon Business) | Internet / business phone carrier | 2019 |
| 682-341 | Onvoy | Internet / business phone carrier | 2018 |
| 682-400 | Onvoy | Internet / business phone carrier | 2016 |
| 682-422 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 682-441 | Onvoy | Internet / business phone carrier | 2024 |
| 682-518 | AT&T (local phone) | Local phone company | 2001 |
| 682-868 | Teleport Communications America | Internet / business phone carrier | – |
| 682-877 | Fractel | Internet / business phone carrier | 2020 |
| 817-225 | Onvoy | Internet / business phone carrier | – |
| 817-405 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 817-435 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 817-453 | AT&T (local phone) | Local phone company | – |
| 817-473 | AT&T (local phone) | Local phone company | – |
| 817-477 | AT&T (local phone) | Local phone company | – |
| 817-539 | AT&T (local phone) | Local phone company | – |
| 817-592 | AT&T Enterprises | Phone company | – |
| 817-728 | Tpx Communications | Internet / business phone carrier | – |
| 817-779 | Teleport Communications America | Internet / business phone carrier | – |
| 817-842 | Onvoy | Internet / business phone carrier | – |
| 817-853 | Matrix Telecom, Llc. S/i/i Tnci | 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.