Phone numbers in Madisonville, Kentucky
Madisonville has 27 phone prefixes in area codes 270, 364.
Biggest holders: Onvoy, AT&T Mobility, AT&T (local phone). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 37%
- Local phone company 19%
- Internet / business phone carrier 44%
Every prefix in Madisonville
Search the first six digits of a number in this list. If it's here, the number started in Madisonville with the carrier shown. If it isn't, check the Kentucky page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 270-245 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 270-263 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 270-326 | AT&T (local phone) | Local phone company | – |
| 270-327 | Onvoy | Internet / business phone carrier | – |
| 270-332 | West Kentucky Rural Telephone Cooperative Corporat | Local phone company | 2020 |
| 270-339 | AT&T Mobility | Mobile carrier | – |
| 270-342 | Onvoy | Internet / business phone carrier | – |
| 270-399 | AT&T Mobility | Mobile carrier | – |
| 270-409 | Onvoy | Internet / business phone carrier | – |
| 270-452 | T-Mobile (including Sprint) | Mobile carrier | – |
| 270-561 | Onvoy | Internet / business phone carrier | 2016 |
| 270-584 | AT&T Mobility | Mobile carrier | – |
| 270-619 | Verizon Wireless | Mobile carrier | – |
| 270-621 | Verizon Wireless | Mobile carrier | – |
| 270-643 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 270-712 | Onvoy | Internet / business phone carrier | – |
| 270-821 | AT&T (local phone) | Local phone company | – |
| 270-824 | AT&T (local phone) | Local phone company | – |
| 270-825 | AT&T (local phone) | Local phone company | – |
| 270-836 | AT&T Mobility | Mobile carrier | – |
| 270-841 | Verizon Wireless | Mobile carrier | – |
| 270-871 | AT&T Mobility | Mobile carrier | – |
| 270-875 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 270-919 | Telnyx | Internet / business phone carrier | 2019 |
| 270-930 | Bandwidth | Internet / business phone carrier | 2025 |
| 364-664 | Onvoy | Internet / business phone carrier | 2022 |
| 364-895 | Twilio | Internet / business phone carrier | 2021 |
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.