What is the SDN (Specially Designated Nationals) list?

The SDN (Specially Designated Nationals and Blocked Persons List) is a list of individuals and entities controlled by or belonging to target countries under OFAC sanctions, as well as terrorists, drug traffickers, and other persons posing a threat to U.S. national security. Individuals on the SDN list have their assets frozen, and U.S. citizens are prohibited from conducting any business transactions with them. The SDN list is published by the Office of Foreign Assets Control (OFAC) and is regularly updated. Companies that are 50% or more owned by individuals on the SDN list are also automatically considered blocked.