OFAC FAQ #166 · Iran Sanctions
OFAC’s SDN List contains a list of entities identified by OFAC as being the Government of Iran. Should U.S. persons now block the property and interests in property of those entities?
OFAC's answer
Yes, U.S. persons should now block the property and interests in property of the Government of Iran entities appearing on the [SDN List](https://ofac.treasury.gov/specially-designated-nationals-list-data-formats-data-schemas), unless OFAC has authorized the underlying transaction or the transaction is exempt.