Phone numbers in Cadiz, Ohio
Cadiz has 6 phone prefixes in area code 740.
Biggest holders: Level 3 (Lumen), Verizon Wireless, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 17%
- Internet / business phone carrier 50%
Every prefix in Cadiz
Search the first six digits of a number in this list. If it's here, the number started in Cadiz with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 740-320 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 740-433 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 740-491 | Verizon Wireless | Mobile carrier | 2003 |
| 740-582 | AT&T Mobility | Mobile carrier | – |
| 740-832 | TON80 Communications | Internet / business phone carrier | – |
| 740-942 | Frontier | 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.