Area code 437 was first put in service March 25, 2013. Currently, the largest city it serves is Toronto, ON, and it overlaps coverage areas with area codes 416 and 647.
Toronto
| PREFIX | COUNTY | CITY | CARRIER | TYPE |
|---|---|---|---|---|
| 437-220 | Toronto | |||
| 437-222 | Toronto | Toronto | ||
| 437-266 | Toronto | Toronto | ||
| 437-333 | Toronto | |||
| 437-344 | Toronto | |||
| 437-345 | Toronto | Toronto | ||
| 437-346 | Toronto | |||
| 437-347 | Toronto | |||
| 437-348 | Toronto | |||
| 437-349 | Toronto | |||
| 437-350 | Toronto | |||
| 437-351 | Toronto | |||
| 437-352 | Toronto | |||
| 437-353 | Toronto | |||
| 437-370 | Toronto | |||
| 437-371 | Toronto | |||
| 437-372 | Toronto | |||
| 437-400 | Toronto | |||
| 437-401 | Toronto | |||
| 437-402 | Toronto | |||
| 437-403 | Toronto | |||
| 437-404 | Toronto | |||
| 437-405 | Toronto | |||
| 437-406 | Toronto | |||
| 437-407 | Toronto | |||
| 437-408 | Toronto | |||
| 437-409 | Toronto | |||
| 437-537 | Toronto | |||
| 437-540 | Toronto | Toronto | ||
| 437-580 | Toronto | Toronto | ||
| 437-588 | Toronto | Toronto | ||
| 437-770 | Toronto | |||
| 437-773 | Toronto | |||
| 437-775 | Toronto | |||
| 437-776 | Toronto | |||
| 437-777 | Toronto | |||
| 437-778 | Toronto | |||
| 437-779 | Toronto | |||
| 437-800 | Toronto | Toronto | ||
| 437-826 | Toronto | |||
| 437-828 | Toronto | |||
| 437-836 | Toronto | Toronto | ||
| 437-886 | Toronto | Toronto | ||
| 437-887 | Toronto | Toronto | ||
| 437-888 | Toronto | Toronto | ||
| 437-889 | Toronto | Toronto | ||
| 437-983 | Toronto | |||
| 437-987 | Toronto | |||
| 437-999 | Toronto |
| Phone Number 437-553-6597 |
USAGE Landline |
City Toronto |
Operate Read more about who called from 4375536597 |
Update Time Mar-26-2026 |
| Phone Number 437-834-5539 |
USAGE Landline |
City Toronto |
Operate Read more about who called from 4378345539 |
Update Time Mar-26-2026 |
| Phone Number 437-449-9744 |
USAGE Landline |
City Toronto |
Operate Read more about who called from 4374499744 |
Update Time Mar-26-2026 |
| Phone Number 437-072-2497 |
USAGE Landline |
City Toronto |
Operate Read more about who called from 4370722497 |
Update Time Mar-26-2026 |
| Phone Number 437-553-6637 |
USAGE Landline |
City Toronto |
Operate Read more about who called from 4375536637 |
Update Time Mar-26-2026 |
| Phone Number 437-886-1475 |
USAGE Landline |
City Toronto |
Operate Read more about who called from 4378861475 |
Update Time Mar-26-2026 |
| Phone Number 437-553-0131 |
USAGE Landline |
City Toronto |
Operate Read more about who called from 4375530131 |
Update Time Mar-26-2026 |
| Phone Number 437-875-2545 |
USAGE Landline |
City Toronto |
Operate Read more about who called from 4378752545 |
Update Time Mar-26-2026 |
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