742 Area Code
Ontario, Canada
Local time now · Eastern Time
3:46 AM
Area code 742 is in Ontario, Canada, serving Mississauga, Hamilton and Richmond Hill. It uses Eastern Time — the time there now is 3:46 AM. 289, 365 and 905 are overlays for the same area, so local calls need 10-digit dialing. In service since 2021.
| Area code | 742 |
|---|---|
| Location | Ontario, Canada |
| Major cities | Mississauga, Hamilton, Richmond Hill |
| Time zone | Eastern Time |
| Overlay codes | 289, 365, 905 |
| In service since | 2021 |
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Frequently asked questions
Where is area code 742?
Ontario, Canada — including Mississauga, Hamilton and Richmond Hill.
What time zone is area code 742?
Eastern Time.
How do I call a 742 number from abroad?
Dial your international access code, then 1 (the country code), then 742 and the 7-digit number — for example +1 742 555 0100. From the UK or India dial 00 1 742 …; from Bangladesh 00 1 742 … .
Is a call from 742 a scam?
Not by itself — 742 is an ordinary geographic area code in Ontario. Numbers can be spoofed, so be careful with unexpected calls asking for money or personal details.
Sources: North American Numbering Plan Administrator (NANPA) NPA database (10/25/2026); major cities from Wikidata (CC0). An area code shows where a number was first assigned — with number portability and mobile phones, the caller may be anywhere.