| 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 |
|---|---|---|
| 289-856 | Oakville | Landline |
| 289-691 | Cobourg | Wireless |
| 289-546 | Palgrave | Landline |
| 289-648 | Aurora | Landline |
| 289-375 | Streetsville | Landline |
| 289-859 | Markham | Landline |
| 289-644 | Oakville | Landline |
| 289-290 | Streetsville | Landline |
| 289-297 | Port Credit | Landline |
| 289-765 | Stoney Creek | Landline |
| 289-626 | Bowmanville | Landline |
| 289-585 | Bolton | Landline |
| 289-925 | Hamilton | Wireless |
| 289-254 | Oshawa | Landline |
| 289-900 | Brampton | Landline |
| 289-733 | Pickering | Landline |
| 289-973 | Dunnville | Wireless |
| 289-420 | Clarkson | Landline |
| 289-350 | Milton | Landline |
| 289-245 | Burlington | Landline |