Phone numbers in Holbrook, Arizona
Holbrook has 5 phone prefixes in area code 928.
Biggest holders: Verizon Wireless, Level 3 (Lumen), Cellular One Of Ne Arizona. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 60%
- Internet / business phone carrier 20%
- Phone company 20%
Every prefix in Holbrook
Search the first six digits of a number in this list. If it's here, the number started in Holbrook with the carrier shown. If it isn't, check the Arizona page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 928-241 | Verizon Wireless | Mobile carrier | 2002 |
| 928-297 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 928-313 | Cellular One Of Ne Arizona | Mobile carrier | 2005 |
| 928-414 | Verizon Wireless | Mobile carrier | – |
| 928-524 | Citizens Telecom Co Of White Mountains | Phone company | – |
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.