Area Code 403 at a Glance
| Area code | 403 |
| Region | Alberta |
| Country | Canada |
| Primary timezone | America/Edmonton |
| Dialing format | +1 (403) NXX-XXXX |
Cities and Places Using Area Code 403
Based on prefix-level carrier data, area code 403 covers places including:
- Calgary, AB
- Lethbridge, AB
- Medicine Hat, AB
- Red Deer, AB
- Airdrie, AB
- Brooks, AB
- High River, AB
- Canmore, AB
- Rocky Mountain House, AB
- Banff, AB
- Cochrane, AB
- Okotoks, AB
Frequently Asked Questions
Where is area code 403?
Area code 403 serves Alberta, Canada.
Who is calling me from area code 403?
A call from area code 403 most likely originates from Alberta, 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 403 number?
Within North America: dial 1-403 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 403 and the number.