Iran blocked the virtual embassy website launched online by the US administration shortly after the website officially started work, FNA reported.
The move was a decisive reaction by the Iranian authorities to the latest plots hatched by Washington against the Iranian nation.
Western, including American, analysts had earlier cautioned Washington that the move would be ineffective and the website would turn into a social website with no tangible result for the US.
In October, US Secretary of State Hillary Clinton, in interviews with the Persian language services of the BBC and Voice of America said the United States plans to open a "virtual embassy" for Iran that would give Iranians online information about visas and student exchange programs despite the lack of formal diplomatic ties".
Clinton used both interviews to pretend that the United States hoped to broaden contacts with regular Iranians despite tensions with the Tehran government, and described Iran's Islamic establishment as a military dictatorship. She also said the "virtual embassy" website would be open by the end of the year and it would provide Iranians with information on visas and other programs.
In her astonishingly interfering remarks, Clinton said the United States was providing both technology and training to help Iranians circumvent government limits on the Internet and other forms of communication while seeking to expand sanctions on Tehran.
In response, Iranian Foreign Ministry Spokesman Ramin Mehman-Parast called on the White House officials to stop meddling in Tehran's domestic affairs, and said the recent remarks made by Clinton on Iran displayed her lack of knowledge and information.
"Officials of the United States of America had better meet the demands of their people, specially the youth, which are manifested in the Occupy Wall Street Protest Movement and comply with the demands and aspirations declared by the people in the Islamic Awakening and popular uprisings in the regional countries who want the US to give up support for dependant rulers and stop military and security presence and interference in the other countries' affairs," he added.