Phone numbers in Zolfo Springs, Florida
Zolfo Springs has 4 phone prefixes in area code 863.
Biggest holders: T-Mobile (including Sprint), TON80 Communications, Terra Nova Telecom. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 25%
- Internet / business phone carrier 50%
Every prefix in Zolfo Springs
Search the first six digits of a number in this list. If it's here, the number started in Zolfo Springs with the carrier shown. If it isn't, check the Florida page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 863-328 | T-Mobile (including Sprint) | Mobile carrier | 2003 |
| 863-374 | TON80 Communications | Internet / business phone carrier | 2022 |
| 863-474 | Terra Nova Telecom | Internet / business phone carrier | 2005 |
| 863-735 | CenturyLink / Lumen | Local phone company | – |
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.