Area code 403 — who called you?
Numbers starting with 403 are assigned to Alberta (Calgary, Banff, Red Deer, Medicine Hat, Lethbridge, Brooks, and most of southern Alberta). Paste the full number below to see the caller's name, carrier and community spam reports — free and anonymous.
Area code 403 at a glance
- Area code
- 403
- Region
- Alberta
- Country
- Canada
- Dial format
- +1 403 XXX XXXX
Assignment data from the North American Numbering Plan Administration (NANPA).
Got a call from 403? Here's what it means.
The three digits after the +1 country code identify the numbering plan area a number was issued in. For 403, that area is Alberta (Calgary, Banff, Red Deer, Medicine Hat, Lethbridge, Brooks, and most of southern Alberta). If you don't know anyone there, the call is more likely to be a business, a call centre or an automated dialer than a personal contact.
An area code alone can't tell you who is calling. Numbers are portable, and VoIP providers can issue a 403 number to a caller located anywhere in the world — a technique known as neighbour spoofing, where a familiar area code is used to make a call look local.
To identify the caller, run the full 10-digit number through a lookup. WhoCallsMe checks the number against carrier records, business directories and community spam reports, and shows the line type, carrier and reported risk.