403 Area Code
The 403 area code serves Calgary, Lethbridge, Medicine Hat, Red Deer in Canada. Learn the cities and counties covered, the time zone, dialing format, and how to get a local 403 business number.
Cities & regions in the 403 area code (4)
Frequently asked questions
What area code is 403?+
403 is a North American Numbering Plan (NANP) area code in Canada, primarily covering Calgary, Lethbridge, Medicine Hat, Red Deer.
Where is the 403 area code located?+
The 403 area code is located in Canada.
How do you dial the 403 area code from abroad?+
Dial your country's international exit code, then +1 403 followed by the 7-digit local number. From inside the US/Canada, dial 1 403 XXX-XXXX.
Can I get a 403 phone number for my business?+
Yes. AstraQom provisions local 403 DID numbers for SIP trunking, hosted PBX, contact centers and toll-free porting — usually within minutes, with no long-term contract.
Get a local 403 number for your business
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AstraQom is an independent global telecom carrier serving 117 countries. We provision local 403 DID numbers, SIP trunks, hosted PBX, contact-center routing and SD-WAN — all on Tier-1 carrier infrastructure with no grey termination and 24/7 multilingual support.