The 402-982 prefix is in Omaha, Nebraska.
There is no area code 071 in North America. North American area codes never begin with zero.
There is no area code 632 in North America (USA, Canada, etc.).There is also no 632 prefix in area code 908.(information current as of 2012-10-16)
There is no area code 338 in North America (USA, Canada, etc.).
There is no area code 483 in North America (USA, Canada, etc.). International country code +48 is Poland.
There is no area code 139 in North America (USA, Canada, etc.). North American area codes cannot begin with 1.
There appears not to be an area code 625 in North America, but rather is assigned to the Marshall Islands in the Pacific Ocean.
There is no area code +1 851 in North America.
Area code 558 is unassigned in North America (USA, Canada, etc.). International country code +55 is Brazil.
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.
North American area code +1 802 is the U.S. state of Vermont.
The telephone exchange code is a numeric prefix in a telephone number that originally was used to identify the specific telephone switch that served that number. With number portability, the geographic zones are not as clear cut, but the exchange code still identifies the charging area. In North America (USA, Canada, etc.), the exchange code is the first three digits after the area code. In other countries, the length of the exchange code may vary.
Area code 847 is the suburbs north of Chicago, including Evanston and Skokie. It is overlaid with area code 224.