The country code and area code of Kimberley, South Africa is 27, (0)53.
I think that you are thinking of Kimberley, which is not a country but a city and district in the Northern Cape region of South Africa. It is a major mining area for a number of different mineral deposits.
South Africa is a country.
The country code and area code of Kroonstad, South Africa is 27, (0)56.
The country code and area code of Bisho, South Africa is 27, (0)40.
The country code and area code of Bethlehem, South Africa is 27, (0)58.
The country code and area code of Ermelo, South Africa is 27, (0)17.
The country code and area code of Grahamstown, South Africa is 27, (0)46.
The country code and area code of Humansdorp, South Africa is 27, (0)42.
The country code and area code of Ladysmith, South Africa is 27, (0)36.
The country code and area code of Malmesbury, South Africa is 27, (0)22.
The country code and area code of Middelburg, South Africa is 27, (0)13.
The country code and area code of Pietermaritzburg, South Africa is 27, (0)33.