'00' is not part of the country code, it is a commonly used international access prefix. Country code +256 is Uganda, and +256 78 is a mobile.
Gabon is country code +241.
The country code and area code of Mubende, Uganda is 256, (0)464.
The country code and area code of Aydin, Turkey is 90, (0)256.
The country code and area code of Arua, Uganda is 256, (0)476.
The country code and area code of Masaka, Uganda is 256, (0)481.
The country code and area code of Lira, Uganda is 256, (0)473.
The country code and area code of Masindi, Uganda is 256, (0)465.
The country code and area code of Kabale, Uganda is 256, (0)486.
The country code and area code of Mityana, Uganda is 256, (0)36.
The country code and area code of Mbarara, Uganda is 256, (0)485.
The country code and area code of Gulu, Uganda is 256, (0)471.