| District of Arizona area codes: 928 | |
|---|---|
| Country | United States |
| State/Province | Arizona |
| Major City | Phoenix |
| Time Zone | (UTC-7) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 928-315 | Yuma | Somerton, AZ | T-mobile Usa |
| 928-317 | Yuma | Yuma, AZ | Qwest Corporation |
| 928-318 | Onvoy | ||
| 928-319 | Navajo | Winslow, AZ | Commnet Wireless |
| 928-321 | Apache | St Johns, AZ | Smith Bagley Inc. DBA Cellular One Of Ne Arizona |
| 928-322 | Graham | Safford, AZ | Cellco Partnership DBA Verizon Wireless |
| 928-323 | Maricopa | Phoenix, AZ | Level 3 Communications |
| 928-325 | Maricopa | Phoenix, AZ | Teleport Communications America |
| 928-328 | Yuma | Yuma, AZ | Qwest Corporation |
| 928-329 | Yuma | Yuma, AZ | Qwest Corporation |
| 928-330 | Mohave | Fort Mohave, AZ | Fort Mojave Telecom |
| 928-332 | Navajo | Heber, AZ | Citizens Telecom Co Of Wht Mtns Inc. |
| 928-333 | Apache | Springerville, AZ | Citizens Telecom Co Of Wht Mtns Inc. |
| 928-334 | Navajo | Pinetop, AZ | Citizens Telecom Co Of Wht Mtns Inc. |
| 928-335 | Navajo | Pinetop, AZ | Citizens Telecom Co Of Wht Mtns Inc. |
| 928-336 | Yuma | Yuma, AZ | Qwest Corporation |
| 928-337 | Apache | St Johns, AZ | Citizens Telecom Co Of Wht Mtns Inc. |
| 928-338 | Navajo | Pinetop, AZ | Citizens Telecom Co Of Wht Mtns Inc. |
| 928-339 | Apache | Alpine, AZ | Citizens Telecom Co Of Wht Mtns Inc. |
| 928-340 | Maricopa | Scottsdale, AZ | Electric Lightwave DBA Integra Telecom |
There are 451 prefixes, In the code area, the major cities are Bullhead City, AZ;Flagstaff, AZ;Fortuna Foothills,. The major city is Phoenix.