| | 289 |
| States: | Ontario |
| Cities: | DUNDAS, HAMILTON, OAKVILLE, PICKERING, UNIONVILLE |
| Exchange | State | City | Phone Carrier | Line Type |
|---|---|---|---|---|
| 289-242 | Ontario | OAKVILLE | ROGERS WIRELESS | |
| 289-333 | Ontario | UNIONVILLE | BELL CANADA - ON | |
| 289-426 | Ontario | HAMILTON | ISP TELECOM | |
| 289-446 | Ontario | DUNDAS | ISP TELECOM | |
| 289-888 | Ontario | OAKVILLE | FIDO SOLUTIONS INC. | |
| 289-892 | Ontario | PICKERING | FIDO SOLUTIONS INC. |