403 Area Code
Covers Calgary and nearby communities in Alberta.
(403) 555-0142Area code 403 map
Interactive coverage map for area code 403, centered on Calgary, Alberta
51.0501, -114.0853
Open in OpenStreetMapArea code 403 coverage map — centered on Calgary. Shaded area shows the approximate reach around the primary city.
403 is the area code for Calgary and the surrounding part of Alberta. It covers communities such as Calgary, Airdrie, Banff, Brooks and more across Alberta. The region observes local time, so a number like (403) 555-0142 is on that clock right now. Neighboring area codes include 780, 509. It shares its territory with the overlay codes 587, 825, which sit on the exact same map. Because the 403 region uses more than one area code, you must dial all ten digits — area code included — even for a local call. You do not, however, need to dial a leading 1 for calls within the US and Canada. Keep reading for the current local time in Calgary, a map of the 403 coverage area, the places it reaches, nearby and overlay codes, and how to tell a real 403 call from a scam.
Cities covered by 403
Cities & neighborhoods
- Calgary
- Airdrie
- Banff
- Brooks
- Canmore
- Coaldale
- Cochrane
- High River
- Lacombe
- Lethbridge
- Medicine Hat
- Okotoks
- Olds
- Ponoka
- Red Deer
- Rocky Mountain House
- Stettler
- Strathmore
- Sylvan Lake
- Taber
Looking for the broader picture? See all Alberta area codes.
Nearby & overlay area codes
Overlay codes (same area)
These share 403’s geography — a number in either code can be on the same street.
Is a call from 403 a scam?
Area code 403 serves Calgary and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 403 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 403 number from abroad
Every 403 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 403 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 403 555-0142 - Australia
0011 1 403 555-0142 - Japan
010 1 403 555-0142 - Mexico
00 1 403 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 403 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 403: frequently asked questions
Where is the 403 area code located?
The 403 area code is located in Alberta, centered on Calgary. Communities in the 403 area include Calgary, Airdrie, Banff, Brooks, Canmore, Coaldale.
What time zone is 403 in?
Area code 403 is in the local time zone (UTC-7 (MST) / UTC-6 (MDT)). You can see the exact current local time for Calgary on the live clock above.
What cities use area code 403?
Cities and areas that use 403 include Calgary, Airdrie, Banff, Brooks, Canmore, Coaldale. Its primary city is Calgary, AB.
Do I need to dial 1 before 403?
For calls within the US, you do not need to dial a leading 1, but you do need all ten digits: 403 plus the seven-digit number. The 403 area requires ten-digit dialing because more than one area code serves it.
Is 403 a toll-free or scam number?
No — 403 is a normal geographic area code for Calgary, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 403 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 403?
Area code 403 is overlaid by 587, 825, meaning those codes cover the same geographic area.