Phone numbers in Sheffield, Alabama
Sheffield has 12 phone prefixes in area codes 256, 938.
Biggest holders: AT&T (local phone), Windstream (PAETEC), MetroPCS (T-Mobile). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 8%
- Local phone company 50%
- Internet / business phone carrier 42%
Every prefix in Sheffield
Search the first six digits of a number in this list. If it's here, the number started in Sheffield with the carrier shown. If it isn't, check the Alabama page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 256-222 | Windstream (PAETEC) | Internet / business phone carrier | 2005 |
| 256-248 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 256-314 | AT&T (local phone) | Local phone company | – |
| 256-320 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 256-381 | AT&T (local phone) | Local phone company | – |
| 256-383 | AT&T (local phone) | Local phone company | – |
| 256-386 | AT&T (local phone) | Local phone company | – |
| 256-389 | AT&T (local phone) | Local phone company | – |
| 256-814 | Comcast | Internet / business phone carrier | 2016 |
| 256-826 | CenturyLink / Lumen | Local phone company | 2014 |
| 256-978 | Level 3 (Lumen) | Internet / business phone carrier | 2010 |
| 938-240 | Onvoy | Internet / business phone carrier | 2024 |
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.