| General Information about Area Code 671 | |
|---|---|
| Country | United States |
| State / Province / Territory | Guam |
| Major City | Agana Heights |
| Time Zone | UTC+10:00 |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 671-969 | Agana Heights | Guam | Landline |
| 671-482 | Hagatna | Guam | Wireless |
| 671-300 | Agana Heights | Guam | Landline |
| 671-649 | Hagatna | Guam | Landline |
| 671-888 | Hagatna | Guam | Wireless |
| 671-473 | Hagatna | Guam | Landline |
| 671-646 | Hagatna | Guam | Landline |
| 671-333 | Hagatna | Guam | Landline |
| 671-486 | Hagatna | Guam | Landline |
| 671-634 | Hagatna | Guam | Landline |
| 671-474 | Hagatna | Guam | Landline |
| 671-489 | Agana Heights | Guam | Wireless |
| 671-858 | Agana Heights | Guam | Wireless |
| 671-678 | Hagatna | Guam | Wireless |
| 671-998 | Agana Heights | Guam | Wireless |
| 671-972 | Agana Heights | Guam | Wireless |
| 671-564 | Hagatna | Guam | Landline |
| 671-787 | Hagatna | Guam | Wireless |
| 671-479 | Hagatna | Guam | Landline |
| 671-868 | Santa Rita | Guam | Wireless |