| 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 |
|---|---|---|
| 289-775 | Hamilton | Wireless |
| 289-430 | Oakville | Landline |
| 289-676 | Oshawa | Landline |
| 289-761 | Dunnville | Wireless |
| 289-592 | Schomberg | Landline |
| 289-748 | Brampton | Landline |
| 289-461 | Bolton | Landline |
| 289-280 | Mount Hope | Landline |
| 289-494 | Dundas | Landline |
| 289-949 | Hamilton | Landline |
| 289-345 | Dundas | Landline |
| 289-588 | Thornhill | Landline |
| 289-478 | Port Colborne | Landline |
| 289-219 | Saint Catharines Thorold | Wireless |
| 289-947 | Richmond Hill | Landline |
| 289-304 | Maple | Landline |
| 289-482 | Pickering | Landline |
| 289-379 | Richmond Hill | Landline |
| 289-527 | Hamilton | Wireless |
| 289-429 | Milton | Landline |