742 Area Code: Greater Toronto Area (overlay of 905)
Updated: November 2026. Area code data: NANPA assignments via Simple Wikipedia and areacode.fyi, checked November 2026.
It covers Greater Toronto Area (overlay of 905).
| Area code | 742 |
|---|---|
| Location | Greater Toronto Area (overlay of 905) |
| Time zone | Eastern Time |
| Type | Geographic |
| Region | Ontario |
Where is 742?
Greater Toronto Area (overlay of 905).
Time zone
Area code 742 is in the Eastern Time zone. The best time to call is generally between 9 a.m. and 8 p.m. local time. Use our best time to call tool to compare it with your own time.
History
The North American Numbering Plan was created in 1947 to organise telephone numbers across the United States, Canada and neighbouring regions. When an area runs out of phone numbers, the North American Numbering Plan Administrator (NANPA) either splits the area or adds an overlay code that covers the same area; overlays are now the usual approach, which is why 10-digit dialing is standard in most places. Area code 742 serves Greater Toronto Area (overlay of 905).
How to dial 742
From the United States or Canada, dial 1 + 742 + the 7-digit number. From abroad, dial your international prefix, then 1 + 742 + the number — for example, +1 742 555 0132.
Is a call from 742 a scam?
Scammers can fake any area code, including 742. A number that looks local is not proof of who is calling. Never share passwords, verification codes or payment details with an unexpected caller; hang up and call the company back on a number from its official website. Report scam calls at reportfraud.ftc.gov, and forward spam texts to 7726.
Report scam calls at reportfraud.ftc.gov, forward spam texts to 7726, and register on the National Do Not Call Registry at donotcall.gov.
Nearby area codes
FAQs
What city is area code 742?
Greater Toronto Area (overlay of 905).
What time zone is area code 742?
Eastern Time.
Is 742 a toll-free area code?
No. 742 is a regular geographic area code, so calls to it are charged at your normal rate.
How do I call a 742 number from abroad?
Dial your international prefix, then 1 + 742 + the 7-digit number — for example, +1 742 555 0132.
Should I call back an unknown 742 number?
Only if you are expecting the call. If you do not recognise the number, look the company up independently instead of calling back — scammers often hope a callback will connect you to a premium-rate or phishing line.
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