+65 Note: there're no area dialing codes in Singapore.
The code +92, which would be dialled 0092 from some locations, is used by Pakistan.
011 is the outbound international calling prefix from any country in the NANP. NANP stands for North American Numbering Plan. Countries included in the NANP are the United States and its territories,...
The 00 part is an international dialing prefix, not part of the international calling code. Country code +92 is Pakistan.
Iran is country code +98.