Currently, secure certificates of any type cannot be issued to individuals or business entities in the following countries, websites, or the following country-code-top-level domains (TLDs):
.af
Afghanistan.by
The Republic of Belarus.cu
Cuba.er
Eritrea.gn
Guinea.ir
Islamic Republic of Iran.kp
Democratic People's Republic of Korea.lr
Liberia.ru
The Russian Federation.ss
South Sudan.su
Soviet Union.sy
Syrian Arab Republic.zw
Zimbabwe
These countries and TLDs are restricted by US Export restriction laws.