Phone numbers in Mayfield, Kentucky
Mayfield has 14 phone prefixes in area codes 270, 364.
Biggest holders: Onvoy, AT&T (local phone), Level 3 (Lumen). 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 57%
Every prefix in Mayfield
Search the first six digits of a number in this list. If it's here, the number started in Mayfield with the carrier shown. If it isn't, check the Kentucky page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 270-247 | AT&T (local phone) | Local phone company | – |
| 270-248 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 270-251 | AT&T (local phone) | Local phone company | – |
| 270-356 | AT&T Mobility | Mobile carrier | – |
| 270-416 | Onvoy | Internet / business phone carrier | – |
| 270-650 | Onvoy | Internet / business phone carrier | – |
| 270-705 | AT&T Mobility | Mobile carrier | 2002 |
| 270-727 | Verizon Wireless | Mobile carrier | – |
| 270-804 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 270-916 | Onvoy | Internet / business phone carrier | – |
| 270-964 | Onvoy | Internet / business phone carrier | – |
| 270-970 | Verizon Wireless | Mobile carrier | 2003 |
| 364-444 | Onvoy | Internet / business phone carrier | 2017 |
| 364-844 | Onvoy | Internet / business phone carrier | 2023 |
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.