Phone numbers in Markham, Texas
Markham has 3 phone prefixes in area code 979.
Biggest holders: Yk Communications, Rice Telecom, Evolve Cellular. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 33%
- Phone company 33%
Every prefix in Markham
Search the first six digits of a number in this list. If it's here, the number started in Markham with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 979-843 | Yk Communications | Local phone company | – |
| 979-855 | Rice Telecom | Phone company | 2025 |
| 979-989 | Evolve Cellular | Mobile carrier | 2008 |
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.