Phone numbers in Hillsboro, Texas
Hillsboro has 17 phone prefixes in area code 254.
Biggest holders: AT&T (local phone), Level 3 (Lumen), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 24%
- Internet / business phone carrier 35%
- Phone company 12%
Every prefix in Hillsboro
Search the first six digits of a number in this list. If it's here, the number started in Hillsboro with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 254-205 | AT&T Mobility | Mobile carrier | 2003 |
| 254-221 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 254-222 | Helmsco | Phone company | – |
| 254-266 | Verizon Wireless | Mobile carrier | 2003 |
| 254-283 | Teleport Communications America | Internet / business phone carrier | 2010 |
| 254-324 | Bandwidth | Internet / business phone carrier | 2001 |
| 254-337 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 254-437 | Telnyx | Internet / business phone carrier | 2021 |
| 254-479 | AT&T Mobility | Mobile carrier | 2001 |
| 254-531 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 254-580 | AT&T (local phone) | Local phone company | – |
| 254-582 | AT&T (local phone) | Local phone company | – |
| 254-602 | AT&T (local phone) | Local phone company | – |
| 254-659 | AT&T (local phone) | Local phone company | 2001 |
| 254-701 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 254-707 | Verizon Wireless | Mobile carrier | – |
| 254-999 | 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.