403 area code: Calgary
A local Calgary line, active as soon as you finish signing up. Calls, texts and an AI agent included.
403 is exhausted: here are the free 587 numbers
No 403 number is available from carriers any more. 587 covers exactly the same territory; your customers already dial ten digits and do not tell them apart. Checked on October 31, 2026.
Where is area code 403?
- Region
- Calgary, Canada
- Main cities
- Calgary, Lethbridge, Medicine Hat and Red Deer
- Time zone
- Mountain Time (UTC-7, UTC-6 in summer)
- In service since
- 1947
- Overlay codes
- 587 and 825
- Dialling
- ten digits, even for a local call
- Format
- +1 403 XXX-XXXX
403 is a Canadian area code in service since 1947. It covers southern Alberta and runs on Mountain Time (UTC-7, UTC-6 in summer).
A call from a 403 number you do not know usually comes from Calgary or nearby: a shop, a clinic, a courier, a customer. The area code says nothing about the caller's intent. If a call looks suspicious, let it go to voicemail and check the number before calling back. Businesses that show their name on the call (caller ID) get called back more often.
To reach a 403 number from Canada or the United States, dial all ten digits: 403 then the seven digits of the number. From abroad, add the country code: +1 403.
Area code 403 covers southern Alberta, including Calgary, Lethbridge, Medicine Hat and Red Deer. It overlays 587 and 825: the same area can have any of them, and ten-digit dialling is required. In southern Alberta many businesses work in the field: when the whole team is on a job site, nobody is at the office to answer.
A 403 number tells your customer you are local. That is what gets you answered: a call from an unfamiliar area code often goes to voicemail unheard.
Frequently asked questions
Where is area code 403?
403 serves southern Alberta, mainly Calgary, Lethbridge, Medicine Hat and Red Deer.
Can I get a 403 number without living there?
Yes. A 403 number can be set up from anywhere in Canada and works on your current phone, with no new device or SIM.
How long before it works?
The number is live as soon as the account is created. Your first call can come in within the minute.
Can I move my existing 403 number?
Yes, porting is included in all plans. It takes 5 to 10 business days, and a temporary number is assigned during the transition.
Can I text from this number?
Yes. The same 403 number sends and receives texts, and an AI agent can answer them.
How is this different from a toll-free number?
A 403 number roots you in a region and reassures a local customer. A toll-free number speaks to the whole country without saying where you are. Many businesses take both.
What time is it in the 403 area code?
Area code 403 runs on Mountain Time (UTC-7, UTC-6 in summer). Calgary keeps the same time as the rest of the region.
A 403 number called me, who is it?
A 403 number comes from southern Alberta. It may be a shop, a clinic or a person in Calgary. The area code alone does not tell you who is calling or whether the call is genuine: when in doubt, let it ring and check the number before calling back.
What is the difference between 403 and 587?
None on the map: 403 and 587 cover the same territory. 587 was added when the other ran out of numbers. Both are dialled with ten digits and cost the same.
Get your 403 number
Active as soon as you finish signing up, ringing on the phone you already use. 14-day trial.
Get started