Phone numbers in Lowcountry, South Carolina
Lowcountry has 7 phone prefixes in area codes 843, 854.
Biggest holders: T-Mobile (including Sprint), Level 3 (Lumen), Hargray. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 14%
- Internet / business phone carrier 43%
- Phone company 14%
Every prefix in Lowcountry
Search the first six digits of a number in this list. If it's here, the number started in Lowcountry with the carrier shown. If it isn't, check the South Carolina page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 843-252 | T-Mobile (including Sprint) | Mobile carrier | – |
| 843-310 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 843-548 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 843-645 | Hargray | Phone company | 2003 |
| 843-987 | Brightspeed Of South Carolina | Local phone company | – |
| 854-845 | Onvoy | Internet / business phone carrier | 2023 |
| 854-946 | Fractel | Internet / business phone carrier | 2020 |
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.