Those accounts belong to hackers or the U.S government simply banned them because they are from Iran??
"Todays action marks the fourth round of U.S. sanctions targeting the Iranian regime this month. Under this Administration, in less than two years, OFAC has sanctioned more than 900 individuals, entities, aircraft, and vessels, including for a range of activities related to Irans support for terrorism, ballistic missile program, weapons proliferation, cyberattacks, transnational criminal activity, censorship, and human rights abuses"
I don't believe this since sadly the trust from the U.S government is long gone...