| General Information about Area Code 720 | |
|---|---|
| Country | United States |
| State / Province / Territory | Colorado |
| Major City | Denver |
| Time Zone | Mountain (UTC-07:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 720-583 | Denver | Denver | Landline |
| 720-244 | Denver | Denver | Wireless |
| 720-349 | Denver | Denver | Landline |
| 720-224 | Denver | Denver | Landline |
| 720-470 | Denver | Denver | Wireless |
| 720-998 | Aurora | Adams | Landline |
| 720-920 | Denver | Denver | Landline |
| 720-370 | Denver | Denver | Landline |
| 720-569 | Denver | Denver | Wireless |
| 720-310 | Longmont | Boulder | Landline |
| 720-495 | Denver | Denver | Wireless |
| 720-696 | Denver | Denver | Landline |
| 720-331 | Denver | Denver | Wireless |
| 720-409 | Denver | Denver | Landline |
| 720-317 | Aurora | Arapahoe | Wireless |
| 720-282 | Aurora | Arapahoe | Landline |
| 720-616 | Denver | Denver | Landline |
| 720-503 | Denver | Denver | Wireless |
| 720-493 | Denver | Denver | Landline |
| 720-421 | Denver | Denver | Wireless |