To call from the US to Canada, or vice versa, you dial 1 plus the area code and the number, the same as for a call within either country.
There are also about 20 area codes within the North American system (country code +1) that are in other countries and territories in or near the Caribbean. For example, area code 757 is in Virginia, but area code 758 is the Caribbean island nation of Saint Lucia. Area codes 242, 246, 264, 268, 284, 345, 441, 473, 649, 664, 721, 758, 767, 784, 809, 829, 849, 868, 869, and 876 are international calls, even though you dial them "one-plus."
Within North America, country code +1, southern Alberta, Canada, has area code 403.An international number beginning with +40 3 is in Romania.
403
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
403
Pittsburgh, PA (central city)
Area code 403 covers the southern portion of the Canadian province of Alberta, including Calgary. Area code 587 is an overlay on the entire province, including 403 and also area code 780 for the northern portion, including Edmonton.
Telephone country code +40 is Romania.
00 isn't part of the country code, it is a commonly used international access prefix.Country code +1 is North America (USA, Canada, etc.).Area code +1 403 is the southern part of the province of Alberta, including Calgary, Alberta, Canada.(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 North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The area of Co Do District is 403 square kilometers.
The area of Oji River is 403 square kilometers.
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I just picked up a white Model 403 John Oster beehive blender for $29 in Victoria, BC, Canada