Phone numbers in Miami, Oklahoma
Miami has 13 phone prefixes in area codes 539, 918.
Biggest holders: AT&T (local phone), UScellular, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 38%
- Local phone company 31%
- Internet / business phone carrier 31%
Every prefix in Miami
Search the first six digits of a number in this list. If it's here, the number started in Miami with the carrier shown. If it isn't, check the Oklahoma page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 539-326 | Onvoy | Internet / business phone carrier | 2025 |
| 539-577 | Fractel | Internet / business phone carrier | 2020 |
| 918-238 | Telnyx | Internet / business phone carrier | – |
| 918-309 | UScellular | Mobile carrier | – |
| 918-320 | T-Mobile (including Sprint) | Mobile carrier | – |
| 918-325 | Verizon Wireless | Mobile carrier | 2004 |
| 918-533 | UScellular | Mobile carrier | – |
| 918-540 | AT&T (local phone) | Local phone company | – |
| 918-541 | AT&T (local phone) | Local phone company | – |
| 918-542 | AT&T (local phone) | Local phone company | – |
| 918-544 | AT&T (local phone) | Local phone company | – |
| 918-919 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 918-961 | AT&T Mobility | Mobile carrier | 2001 |
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.