Phone numbers in Alto, New Mexico
Alto has 4 phone prefixes in area code 575.
Biggest holders: Bandwidth, Windstream Comm Sw, Mescalero Apache Telecom. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 25%
- Internet / business phone carrier 50%
- Phone company 25%
Every prefix in Alto
Search the first six digits of a number in this list. If it's here, the number started in Alto with the carrier shown. If it isn't, check the New Mexico page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 575-228 | Bandwidth | Internet / business phone carrier | 2014 |
| 575-336 | Windstream Comm Sw | Local phone company | – |
| 575-498 | Mescalero Apache Telecom | Phone company | 2005 |
| 575-729 | Bandwidth | Internet / business phone carrier | 2015 |
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.