The area code for Edmonton and northern Alberta is +1 780. Area code +1 587 is an overlay for the entire province.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The Canadian province of Alberta has three area codes. Area code +1 403 serves southern Alberta, including Calgary. Area code +1 780 serves northern Alberta, including Edmonton. Area code +1 587 is an overlay on the entire province.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The 2 phone area codes for Calgary, AB, are +1 403 and +1 587.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
Calgary, Alberta, is in area code 403, with overlay code 587.
+1403 is the Calgary area in Canada.
Telephone country code +1 is North America (USA, Canada, etc.), but there is no area code 121 in North America. It is an invalid number.
No such area code in North America (telephone country code +1 = USA, Canada, etc.).
The area code system for the United States and Canada was created in 1947.
The entire province of Newfoundland and Labrador is area code 709.
Canada does not use zip codes, we use postal codes. Calgary uses several different postal codes, probably in to the 100s. You would need to know the address, or area of Calgary to find the right postal code for it.
There is no area code 795 in North America (USA, Canada, etc.).
403
NOSCATT
In North America (USA, Canada, etc.), telephone area code +1 737 is an overlay on area code +1 512, serving part of central Texas including Austin.
There is no telephone area code 101 in North America (USA, Canada, etc.). Telephone country code +1 is North America, but +1 01 is also invalid. Telephone area codes in North America never begin with 0 or 1. There are other countries that may have a domestic telephone area code 101 or similar, but it is impossible to know which one you're asking about.
00 = commonly used international access prefix 1 = country code for USA, Canada, etc. 403 = area code for southern Alberta, Canada, including Calgary 606 = a prefix in Calgary