| 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 |
|---|---|---|
| 289-218 | Oakville | Wireless |
| 289-503 | Bolton | Landline |
| 289-407 | Saint Catharines Thorold | Wireless |
| 289-344 | Georgetown | Landline |
| 289-360 | Cooksville | Landline |
| 289-864 | Brampton | Landline |
| 289-277 | Southpick | Landline |
| 289-518 | Dunnville | Landline |
| 289-652 | Streetsville | Landline |
| 289-844 | Unionville | Landline |
| 289-213 | Saint Catharines Thorold | Wireless |
| 289-385 | Oshawa | Wireless |
| 289-374 | Cooksville | Landline |
| 289-439 | Hamilton | Wireless |
| 289-423 | Pickering | Wireless |
| 289-595 | Uxbridge | Landline |
| 289-470 | Newmarket | Landline |
| 289-700 | Hamilton | Wireless |
| 289-309 | Hamilton | Landline |
| 289-992 | Oshawa | Wireless |