Area Code 343 at a Glance
| Area code | 343 |
| Region | Ontario |
| Country | Canada |
| Primary timezone | America/Toronto |
| Dialing format | +1 (343) NXX-XXXX |
Frequently Asked Questions
Where is area code 343?
Area code 343 serves Ontario, Canada.
Who is calling me from area code 343?
A call from area code 343 most likely originates from Ontario, but caller ID can be spoofed. If an unknown caller asks for personal or payment information, hang up and call the organization back on its official number.
How do I dial a 343 number?
Within North America: dial 1-343 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 343 and the number.