Area Code 403 — Alberta
This is a Canadian area code
Area code 403 is located in Alberta, Canada. Canada shares the North American Numbering Plan (NANPA) with the US, so Canadian numbers use the same 10-digit format. Calls between the US and Canada may or may not be included in your plan — check with your carrier, as international rates can apply.
Area code 403 is located in Alberta, Canada and operates on Mountain Time . The largest city served is Calgary . View all Canadian area codes →
Coverage Area
Area code 403 — AlbertaArea Code Details
- Area Code
- 403
- State / Province
- Alberta (AB)
- Country
- Canada
- Time Zone
- Mountain Time Mountain Time
- Local Time Now
- —
- Status
- Active
- Code Type
- General Purpose Code
- In Service Since
- January 1, 1947
- Assigned
- January 1, 1947
- Population Served
- ~1,747,119 est.
- Overlay Complex
- 368/403/587/825
Cities Served
History & Relationships
New codes split from 403
Rate Centers & Exchanges
12 rate centers identified within area code 403
Other Area Codes in Alberta
View all →Nearby Area Codes
Frequently Asked Questions About Area Code 403
What state is area code 403?
Area code 403 is located in Alberta.
Where is area code 403 from?
Area code 403 originates from Alberta. It operates in the Mountain Time zone.
What time zone is area code 403?
Area code 403 falls within the Mountain Time zone (Mountain Time).
What cities are in area code 403?
Area code 403 serves cities including Calgary, Lethbridge, Red Deer, Airdrie, Medicine Hat, Cochrane, Strathmore, Blackfalds, and more.
Is a call from area code 403 a scam?
Area code 403 is a legitimate Canadian area code serving Alberta. Like any area code, individual numbers using 403 can be used for scam calls. Note that calls from 403 are international calls from Canada — unexpected calls may incur charges. Always verify the specific number if you receive an unexpected or suspicious call.