| District of Ontario area codes: 437 | |
|---|---|
| Country | Canada |
| State/Province | Ontario |
| Major City | Toronto |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 437-222 | Toronto, ON | Beanfield Technologies Inc. | |
| 437-266 | Toronto, ON | Comwave Networks | |
| 437-345 | Toronto, ON | Telus Mobility | |
| 437-540 | Toronto, ON | Telus Mobility | |
| 437-580 | Toronto, ON | Telus Mobility | |
| 437-588 | Toronto, ON | Telus Mobility | |
| 437-800 | Toronto, ON | Iristel Inc. | |
| 437-836 | Toronto, ON | Allstream Inc. | |
| 437-886 | Toronto, ON | Fibernetics Corporation | |
| 437-887 | Toronto, ON | Fibernetics Corporation | |
| 437-888 | Toronto, ON | Fibernetics Corporation | |
| 437-889 | Toronto, ON | Fibernetics Corporation | |
| 437-555 | Used in movie | Toronto, ON | Used in movie |
| 1 | ›› |
There are 13 prefixes, In the code area, the major cities are Toronto, ON. The major city is Toronto.