Phone numbers in Baldwin, Florida
Baldwin has 11 phone prefixes in area code 904.
Biggest holders: Onvoy, Level 3 (Lumen), Bandwidth. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 9%
- Internet / business phone carrier 82%
- Phone company 9%
Every prefix in Baldwin
Search the first six digits of a number in this list. If it's here, the number started in Baldwin with the carrier shown. If it isn't, check the Florida page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 904-257 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 904-266 | AT&T (local phone) | Local phone company | – |
| 904-299 | Onvoy | Internet / business phone carrier | 2016 |
| 904-467 | Bandwidth | Internet / business phone carrier | 2018 |
| 904-474 | AT&T Enterprises | Phone company | 2009 |
| 904-605 | Onvoy | Internet / business phone carrier | 2020 |
| 904-712 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 904-851 | Bandwidth | Internet / business phone carrier | 2022 |
| 904-906 | Onvoy | Internet / business phone carrier | 2019 |
| 904-922 | Fractel | Internet / business phone carrier | 2021 |
| 904-941 | Onvoy | Internet / business phone carrier | 2025 |
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.