Canada · Alberta
403 Area Code
Area code 403 serves Calgary and surrounding communities in Alberta, Canada. Numbers that start with 403 follow Mountain time. Enter the full number in the lookup panel to see the carrier, line type and scam risk before you call back.
- Location
- Calgary, AB
- Local time
- —Mountain · GMT-6
- Dialing
- +1 403 XXX XXXX
- LineMobile
- CarrierT-Mobile USA
- LocationSan Francisco, CA
- Caller nameNot published
- RiskLow risk· 3 reports
Cities and communities in 403
403 covers Calgary, Red Deer and Lethbridge. The same area is also served by 587 and 825, so a Calgary business or resident may have a number under any of these codes.
A geographic area code tells you where a number was issued, not where the phone is today. People keep their numbers when they move, and businesses buy local numbers to look nearby. Use it as a starting point, then confirm with the carrier and line type from a lookup.
Most reported 403 numbers
No reports yet for 403 numbers. Be the first to flag a number that called you.
Got a call from a 403 number that is not listed? Add it on the Who Called Me page. Reports show up here and on every lookup within minutes.
Common scam calls from 403 numbers
Scam callers rotate through local-looking numbers because people answer them more often. These are the patterns reported most often across North America and seen with 403 caller IDs.
- "the CRA" threats. A recorded voice claims a warrant or unpaid tax bill and demands payment by gift card or wire. Government agencies do not call from 403 numbers to demand instant payment.
- Bank fraud alerts. A caller pretends to be the fraud desk of a bank with branches in Calgary and asks you to "verify" a card number or one-time code. Hang up and call the number on the back of your card.
- Local-looking spoofed numbers. Scammers spoof 403 numbers so the call looks local. A lookup that shows a VoIP line, or a carrier that does not serve Alberta, is the giveaway.
- Delivery and utility texts. Texts about a missed package or an overdue Calgary utility bill link to a fake payment page. Trace the sending number before tapping anything.
How to check a 403 number
- Enter the full ten-digit number in the panel above. The area code is already filled in.
- Read the line type and carrier. A mobile or landline from a carrier that serves Alberta is usually genuine; a VoIP line spun up yesterday is not.
- Check the risk level and community reports. If others have flagged the number, do not call back.
- Still unsure? Unlock risk details or the owner report for the number.
Frequently asked questions
Where is area code 403?
Area code 403 is in Alberta, Canada. Its largest city is Calgary, and it also covers Red Deer, Lethbridge.
What time zone is area code 403 in?
403 follows Mountain time (GMT-6). Check the live local time above before returning a call.
Is a call from 403 a scam?
Not by itself. 403 is a normal geographic area code, but scammers spoof local numbers. Run the free lookup on the exact number: a VoIP line, a carrier outside Alberta or existing community reports are the warning signs.
Why do I also see 587 and 825 in Calgary?
587 and 825 are overlay codes that share the same area as 403. New numbers in Calgary may be issued under any of them, so ten-digit dialing is required.