OFAC FAQ #194 · Iran Sanctions
Are U.S. persons required to block the property of individuals and entities identified under Executive Order 13608?
OFAC's answer
No. Identifications or listings under [Executive Order 13608](https://ofac.treasury.gov/media/5926/download?inline) do not block any assets. However, a U.S. person may not provide or procure goods or services, including financial services, or technology to or from a listed person without authorization from OFAC, unless the transaction is otherwise exempt from regulation under the International Emergency Economic Powers Act (e.g., certain travel-related transactions).