Active Prefixes in Area Code 289
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 289-426-#### | Hamilton | Landline | Isp Telecom... |
| 289-427-#### | Burlington | Landline | Isp Telecom... |
| 289-428-#### | Georgetown | Landline | Isp Telecom... |
| 289-429-#### | Milton | Landline | Isp Telecom... |
| 289-430-#### | Oakville | Landline | Isp Telecom... |
| 289-431-#### | Waterdown | Landline | Isp Telecom... |
| 289-432-#### | Beamsville | Landline | Distributel... |
| 289-433-#### | Dunnville | Landline | Distributel... |
| 289-434-#### | Saint Catharines-Thorold | Landline | Distributel... |
| 289-435-#### | Cobourg | Landline | Isp Telecom... |
| 289-436-#### | Port Hope | Landline | Isp Telecom... |
| 289-438-#### | Saint Catharines-Thorold | Landline | Fibernetics Corporat... |
| 289-439-#### | Hamilton | Wireless | Bell Mobility... |
| 289-440-#### | Hamilton | Wireless | Bell Mobility... |
| 289-441-#### | Hamilton | Wireless | Bell Mobility... |
| 289-442-#### | Hamilton | Wireless | Bell Mobility... |
| 289-443-#### | Ancaster | Landline | Bell Canada... |
| 289-444-#### | Cooksville | Landline | Isp Telecom... |
| 289-445-#### | Ancaster | Landline | Isp Telecom... |
| 289-446-#### | Dundas | Landline | Isp Telecom... |
| 289-447-#### | Grimsby | Landline | Isp Telecom... |
| 289-448-#### | Stoney Creek | Landline | Isp Telecom... |
| 289-449-#### | Welland | Landline | Allstream Inc.... |
| 289-450-#### | Ancaster | Landline | Allstream Inc.... |
| 289-451-#### | Markham | Landline | Allstream Inc.... |
| 289-452-#### | Richmond Hill | Landline | Allstream Inc.... |
| 289-453-#### | Newmarket | Landline | Allstream Inc.... |
| 289-454-#### | Cooksville | Landline | Allstream Inc.... |
| 289-455-#### | Grimsby | Wireless | Telus Mobility... |
| 289-456-#### | Hamilton | Wireless | Telus Mobility... |
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 | |