Area code · Canada
Area code 403 — Calgary, AB
Alberta · in service since 1947
Area code 403 covers part of Alberta; its largest exchange areas are Calgary, Red Deer, and Lethbridge. 780 covers another part, and 368, 587, 825 overlay both, so neighbors can have different area codes.
Overlay, same area: 368 587 825
Other part of the area: 780
New overlay: 568 starts June 10, 2028
Local time in Calgary
Spam reports from Sep 23 – Oct 22, 2026
Average #283 of 461 codes
306 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneMountain Time; UTC-6 all year from Nov 1, 2026
- Local calls10 digits
- Prefixes781 in service
- Runs out~1Q 2029
- Unwanted call?Block & report
Spam call reports about 403 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 38 |
| Sep 14 | 82 |
| Sep 21 | 76 |
| Sep 28 | 69 |
| Oct 5 | 37 |
| Oct 12 | 38 |
| Oct 19 (4 days) | 112 |
Compared with all codes
- Robocalls
- 91%all codes 75%
- Callers with the same code
- 0%all codes 35%
- Rank by complaints
- #283of 461 · middle half
- FCC complaints, Oct 2025 – Sep 2026
- 241 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Reducing your debt (credit cards, mortgage, student loans) | 252 56% | |
| Calls pretending to be government, businesses, or family and friends | 34 8% | |
| Dropped call or no message | 6 1% | |
| Work from home & other ways to make money | 3 1% | |
| Computer & technical support | 1 <1% | |
| Other | 137 30% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| California | 50 11% | |
| Texas | 48 11% | |
| Florida | 45 10% | |
| North Carolina | 25 6% | |
| New York | 21 5% |
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 403 location and prefixes
| Exchange (CNAC) | Place | Prefixes |
|---|---|---|
| Calgary | Calgary | 370 |
| Red Deer | Red Deer | 40 |
| Lethbridge | Lethbridge | 32 |
| Medicine Hat | Medicine Hat | 23 |
| Canmore | Canmore | 11 |
| High River | High River | 11 |
| Strathmore | Strathmore | 11 |
| Brooks | Brooks | 10 |
| Banff | Banff | 9 |
| Crowsnest Pass | Crowsnest Pass | 9 |
Plus 132 smaller exchange areas.
Source: CNAC, CO code status of Oct 23, 2026.
NANPA record
- Location
- Alberta
- Assigned by NANPA
- 1947
- Local dialing
- 10 digits (NANPA: 10D)
- NANPA planning letters
- PL-374, PL-364, PL-176, PL-148, PL-084
Source: NANPA, NPA database of Oct 24, 2026.
Is 403 running out of numbers?
Previous forecast (October 2025): 2028, moved later by 1 year.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 403 prefixes
The five largest of 19 original holders
As listed by CNAC, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Telus | 401 51% | |
| Telus Mobility | 95 12% | |
| Rogers Communications Canada Inc. (Wireless) | 71 9% | |
| Bell Mobility | 64 8% | |
| Shaw Telecom Inc. | 59 8% |
Source: CNAC, CO code status of Oct 23, 2026.
Questions about area code 403
What area code is 403?
An Alberta area code in Canada, in service since 1947.
Where is 403 area code, and what time zone is it in?
Calgary, AB; Mountain Time; UTC-6 all year from Nov 1, 2026.
Why am I getting spam calls from 403?
306 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).
Will 403 get a new area code?
NANPA forecasts exhaust in 1Q 2029; no relief planning listed.