Country code +964 is Iraq.
A variety of different countries have city codes like 964. It's impossible to say which one you're looking for, without more information.
The country code and area code of Baghdad, Iraq is 964, 1.
The country code and area code of Basrah, Iraq is 964, 40.
The country code and area code of Amara, Iraq is 964, 43.
The country code and area code of Baquba, Iraq is 964, 25.
The country code and area code of Hillah, Iraq is 964, 30.
The country code and area code of Kirkuk, Iraq is 964, 50.
The country code and area code of Kut, Iraq is 964, 23.
The country code and area code of Najaf, Iraq is 964, 33.
The country code and area code of Nasiriya, Iraq is 964, 42.
The country code and area code of Ramadi, Iraq is 964, 24.
The country code and area code of Samawa, Iraq is 964, 37.
The country code and area code of Sulaimaniya, Iraq is 964, 53.