Area code 587 — Alberta
All of Alberta (overlay of 403/780). Overlay assignment, in service since 2008.
At a glance
- Country
- Canada
- Province / territory
- Alberta
- Service area
- All of Alberta (overlay of 403/780)
- Time zone
- Mountain Time (MST/MDT, UTC-7/-6) · current offset -06:00
- Type
- Overlay
- In service since
- 2008
- Country code
- +1 (NANP)
Map
Cities served by 587
Related & overlay area codes
Area code 587 shares geography with 4 other codes serving the same region. A call placed inside this overlay must dial all 10 digits regardless of which code your own line uses.
Carriers operating in 587
The following national and regional telecommunications carriers hold central office (CO) code assignments within numbering plan area 587. Number portability means a phone number originally issued by one carrier may now ride on another carrier's network.
About area code 587
Area code 587 is a Canadian numbering plan area covering All of Alberta (overlay of 403/780). It was placed into service in 2008 as a overlay code, and today operates under the Mountain Time (MST/MDT, UTC-7/-6) time zone.
Numbers in the 587 NPA are issued in central office (CO) blocks of 10,000 to local exchange carriers, who then assign them to subscribers. Because Canada uses a competitive carrier model under CRTC oversight, multiple carriers — both incumbent and competitive — hold blocks within 587. The current carrier of record for any specific number can be looked up via the Canadian Local Number Portability Consortium, but the originally issued carrier is no longer a reliable signal of who actually serves that line.
If you receive a call from a number beginning with 587, the caller is either physically located in or has historically been associated with All of Alberta (overlay of 403/780). The same applies to overlay codes 403, 780, 825, 368: any of these area codes can correspond to a phone in the same geography, and many households carry numbers from two or three different overlays simultaneously across landlines and mobile devices.
To call a number in 587 from outside Canada and the United States, dial your country's international access prefix, then +1 587 followed by the 7-digit local number. Within the NANP, simply dial 1 followed by all 10 digits — or just the 10 digits if you are also located in an overlay region where 7-digit local dialling is no longer permitted.
Frequently asked questions
Where is area code 587?
Area code 587 serves All of Alberta (overlay of 403/780) in Alberta, Canada.
What time zone is 587?
Numbers in 587 are in the Mountain Time (MST/MDT, UTC-7/-6) time zone.
Is 587 a toll-free or mobile-only code?
No. Canadian area codes are geographic — they apply to both landline and mobile numbers in All of Alberta (overlay of 403/780). Toll-free codes in the NANP (800, 833, 844, 855, 866, 877, 888) are a separate category.
Why do I see calls from 587 if I do not know anyone there?
Two reasons. First, mobile portability: someone who moved away from Alberta can keep their 587 number anywhere in the world. Second, scam callers frequently spoof Canadian area codes to appear local. If you do not recognise the number, it is generally safe to let it go to voicemail.