403 Area Code
Alberta, Canada
Local time now · Mountain Time
1:42 AM
Area code 403 is in Alberta, Canada, serving Calgary, Red Deer, Sylvan Lake and Brooks. It uses Mountain Time — the time there now is 1:42 AM. 368, 568, 587, 780 and 825 are overlays for the same area, so local calls need 10-digit dialing. In service since 1947.
| Area code | 403 |
|---|---|
| Location | Alberta, Canada |
| Major cities | Calgary, Red Deer, Sylvan Lake, Brooks |
| Time zone | Mountain Time |
| Overlay codes | 368, 568, 587, 780, 825 |
| In service since | 1947 |
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Frequently asked questions
Where is area code 403?
Alberta, Canada — including Calgary, Red Deer, Sylvan Lake and Brooks.
What time zone is area code 403?
Mountain Time.
How do I call a 403 number from abroad?
Dial your international access code, then 1 (the country code), then 403 and the 7-digit number — for example +1 403 555 0100. From the UK or India dial 00 1 403 …; from Bangladesh 00 1 403 … .
Is a call from 403 a scam?
Not by itself — 403 is an ordinary geographic area code in Alberta. 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.