Iran has blocked access to major sites and websites using certain Https protocol like Gmail, Google,Yahoo.com, Google and all sites that rely on the search giant’s API such as WolframAlpha.com. Nobody can even use banking websites in Iran because all of them using “Https” to encode the sensetive data. We check the “google.com” as shown,but it showing that site is working. This Condition until Esfand, next month in Persian calender after the 33rd anniversary of the Islamic Revolution.
Source: https://thehackernews.com/2012/02/iran-shutdown-google-yahoo-other-major.html