| General Information about Area Code 289 | |
|---|---|
| Country | Canada |
| State / Province / Territory | Ontario |
| Major City | Unionville |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | Primary City | Phone Type |
|---|---|---|
| 289-549 | Queensville | Landline |
| 289-273 | Saint Catharines Thorold | Landline |
| 289-623 | Malton | Wireless |
| 289-819 | Richmond Hill | Landline |
| 289-233 | Brampton | Wireless |
| 289-270 | Milton | Landline |
| 289-964 | Newtonville | Landline |
| 289-858 | Dundas | Landline |
| 289-969 | Saint Catharines Thorold | Wireless |
| 289-404 | Oshawa | Wireless |
| 289-337 | Burlington | Landline |
| 289-717 | Whitby | Landline |
| 289-492 | Hamilton | Landline |
| 289-849 | Clarkson | Landline |
| 289-612 | Stouffville | Landline |
| 289-512 | Oshawa | Landline |
| 289-977 | Burlington | Landline |
| 289-687 | Saint Catharines Thorold | Wireless |
| 289-548 | Malton | Landline |
| 289-299 | Clarkson | Landline |