Area code 403
Alberta · Calgary, Lethbridge
- Area code
- 403
- Country
- Canada
- Region
- Alberta
- Major cities
- Calgary, Lethbridge
- Time zone
- America/Edmonton
- Note
- Southern Alberta area code.
This is a domestic area code inside Canada. It is not the international calling code.
Frequently asked questions
Which cities use area code 403?
Area code 403 serves Alberta in Canada, including Calgary, Lethbridge.
What region does area code 403 cover?
Area code 403 covers Alberta. Area codes route calls to a specific city or region within a country's national telephone network.
What is the difference between an area code and a calling code?
A calling code routes a call across borders to a national network, while an area code routes it to a city or region inside that network. For a Canada number, the country calling code is the international prefix and 403 is the domestic area code.
What time zone is area code 403 in?
Area code 403 is in the IANA time zone America/Edmonton.
Is area code 403 the international calling code?
No. 403 is a domestic area code inside Canada, not the international calling code. To call this region from abroad, you dial the country's calling code first, then 403 and the local number.