Phone numbers in New Madrid, Missouri
New Madrid has 4 phone prefixes in area code 573.
Biggest holders: AT&T Mobility, AT&T (local phone), T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Local phone company 25%
- Internet / business phone carrier 25%
Every prefix in New Madrid
Search the first six digits of a number in this list. If it's here, the number started in New Madrid with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 573-521 | AT&T Mobility | Mobile carrier | – |
| 573-748 | AT&T (local phone) | Local phone company | – |
| 573-805 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 573-963 | Level 3 (Lumen) | Internet / business phone carrier | 2016 |
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.