Phone numbers in Madison, North Carolina
Madison has 8 phone prefixes in area codes 336, 743.
Biggest holders: Brightspeed Of North Carolina, Onvoy, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 12%
- Local phone company 38%
- Internet / business phone carrier 50%
Every prefix in Madison
Search the first six digits of a number in this list. If it's here, the number started in Madison with the carrier shown. If it isn't, check the North Carolina page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 336-427 | Brightspeed Of North Carolina | Local phone company | – |
| 336-445 | Brightspeed Of North Carolina | Local phone company | – |
| 336-453 | AT&T Mobility | Mobile carrier | – |
| 336-548 | Brightspeed Of North Carolina | Local phone company | – |
| 336-916 | Level 3 (Lumen) | Internet / business phone carrier | 2014 |
| 336-949 | MCImetro (Verizon Business) | Internet / business phone carrier | 2005 |
| 743-231 | Onvoy | Internet / business phone carrier | 2021 |
| 743-743 | Onvoy | Internet / business phone carrier | 2026 |
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.