Phone numbers in Middleburg, Florida
Middleburg has 19 phone prefixes in area code 904.
Biggest holders: MetroPCS (T-Mobile), AT&T (local phone), AT&T Enterprises. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 26%
- Local phone company 21%
- Internet / business phone carrier 42%
- Phone company 11%
Every prefix in Middleburg
Search the first six digits of a number in this list. If it's here, the number started in Middleburg with the carrier shown. If it isn't, check the Florida page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 904-203 | AT&T Enterprises | Phone company | 2011 |
| 904-214 | AT&T (local phone) | Local phone company | 2004 |
| 904-282 | AT&T (local phone) | Local phone company | – |
| 904-291 | AT&T (local phone) | Local phone company | – |
| 904-406 | Comcast | Internet / business phone carrier | – |
| 904-413 | AT&T Enterprises | Phone company | 2008 |
| 904-505 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 904-526 | MetroPCS (T-Mobile) | Mobile carrier | 2019 |
| 904-589 | AT&T (local phone) | Local phone company | 2006 |
| 904-600 | Bandwidth | Internet / business phone carrier | 2010 |
| 904-606 | Comcast | Internet / business phone carrier | 2014 |
| 904-734 | IP Horizon | Internet / business phone carrier | 2021 |
| 904-736 | Fractel | Internet / business phone carrier | 2020 |
| 904-787 | MetroPCS (T-Mobile) | Mobile carrier | 2022 |
| 904-818 | Commio | Internet / business phone carrier | 2023 |
| 904-843 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 904-848 | MetroPCS (T-Mobile) | Mobile carrier | 2022 |
| 904-872 | MetroPCS (T-Mobile) | Mobile carrier | 2016 |
| 904-936 | 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.