Phone numbers in Carmi, Illinois
Carmi has 5 phone prefixes in area code 618.
Biggest holders: Frontier, Mcc Network Services, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 20%
- Local phone company 40%
- Internet / business phone carrier 20%
- Phone company 20%
Every prefix in Carmi
Search the first six digits of a number in this list. If it's here, the number started in Carmi with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 618-380 | Mcc Network Services | Phone company | 2002 |
| 618-382 | Frontier | Local phone company | – |
| 618-383 | AT&T Mobility | Mobile carrier | 2001 |
| 618-384 | Frontier | Local phone company | – |
| 618-387 | Telnyx | Internet / business phone carrier | – |
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.