Active Prefixes in Area Code 289
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 289-359-#### | Malton | Landline | Telus Integrated Com... |
| 289-360-#### | Cooksville | Landline | Telus Integrated Com... |
| 289-361-#### | Niagara Falls | Landline | Telus Integrated Com... |
| 289-362-#### | Saint Catharines-Thorold | Landline | Telus Integrated Com... |
| 289-363-#### | Oakville | Landline | Telus Integrated Com... |
| 289-364-#### | Saint Catharines-Thorold | Landline | Telus Integrated Com... |
| 289-366-#### | Newmarket | Landline | Fibernetics Corporat... |
| 289-369-#### | Dunnville | Landline | Allstream Inc.... |
| 289-370-#### | Cayuga | Landline | Allstream Inc.... |
| 289-371-#### | Woodbridge | Landline | Allstream Inc.... |
| 289-372-#### | Ajax-Pickering | Landline | Allstream Inc.... |
| 289-373-#### | Clarkson | Landline | Allstream Inc.... |
| 289-374-#### | Cooksville | Landline | Allstream Inc.... |
| 289-375-#### | Streetsville | Landline | Telus Integrated Com... |
| 289-376-#### | Port Robinson | Landline | Telus Integrated Com... |
| 289-377-#### | Dunnville | Wireless | Bell Mobility... |
| 289-378-#### | Markham | Landline | Fibernetics Corporat... |
| 289-379-#### | Richmond Hill | Landline | Fibernetics Corporat... |
| 289-380-#### | Aurora | Wireless | Rogers Communication... |
| 289-381-#### | Dunnville | Wireless | Rogers Communication... |
| 289-382-#### | Hamilton | Wireless | Rogers Communication... |
| 289-383-#### | Newmarket | Wireless | Bell Mobility... |
| 289-384-#### | Malton | Landline | Fibernetics Corporat... |
| 289-385-#### | Oshawa | Wireless | Bell Mobility... |
| 289-386-#### | Oakville | Landline | Bell Canada... |
| 289-387-#### | Ajax-Pickering | Wireless | Bell Mobility... |
| 289-388-#### | Ajax-Pickering | Wireless | Bell Mobility... |
| 289-389-#### | Hamilton | Landline | Telus Integrated Com... |
| 289-390-#### | Thornhill | Landline | Telus Integrated Com... |
| 289-391-#### | Hamilton | Landline | Telus Integrated Com... |
Area Code 289 Introduction
| Area Code: | 289 |
| Country: | Canada |
| State/Province: | Ontario |
| Major City: | Mississauga |
| Time Zone: | Eastern |
| About 289 : | |
| Southern Ontario, Canada is served by area code 289, which was created as an overlay to 905 in 2001. 289 coverage area includes the Niagara Peninsula, Hamilton, Oshawa, and the suburban Toronto area. |
|
| Major cities or places | |
| Area codes 905, 289 and 365 cover a portion of southern Ontario including Niagara Falls and the Greater Toronto Area, and the larger communities of Ajax, Ancaster, Aurora, Brampton, Burlington, Caledon, Cobourg, Dunnville, Fort Erie, Georgetown, Hamilton, King Township, Maple, Markham, Milton, Mississauga, Newmarket, Oshawa, Richmond Hill, St. Catharines, Stoney Creek, Thornhill, Unionville, Welland, Woodbridge and many smaller surrounding communities | |