Vancouver, B.C., Canada, is in area code +1 604, with overlay codes +1 778 and +1 236.
(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.)
Unless you have a calling plan that offers unlimited calls in the US and Canada, a call from area code 314 (in or near St. Louis, Missouri) to area code 905 (suburbs of Toronto, Canada), will be billed as an international toll call.
There is no area code 523 in North America (USA, Canada, etc.). International country code +52 is Mexico.
The country code and area code of Nova Scotia- Prince Edward Island, Canada is 1, (1+)902.
There is no area code 483 in North America (USA, Canada, etc.). International country code +48 is Poland.
Area code 647 is the city of Toronto, Ontario, Canada, in an overlay on area code 416.
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.
No such area code in North America (telephone country code +1 = USA, Canada, etc.).
Newfoundland and Labrador in Canada
Area code 343 has been assigned in Canada, to overlay the 613 area code in Eastern Ontario. This area includes Ottawa
The area code for Stratford, Ontario, Canada is 519 or 226. (226 is an overlay of 519, serving the same geographic territory.)
Toronto, Ontario, Canada - Eastern Time Zone
Area code 323 is located in that famous part of Ontario, Canada, called "downtown Los Angeles, California, USA."