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5 Nonpostal Export Regulations > 510 Office of Foreign Assets Control (OFAC)Regulations —U.S. Department of the Treasury > 512 Prohibited Destinations, Specially DesignatedNationals, and Blocked Persons
Mailers may not send items to certain countries (Cuba, Iran, North Korea, and Sudan) or to a “blocked person.” Blocked persons include individuals and entities (regardless of the mailing destination) that are listed on the OFAC Specially Designated Nationals (SDN) list. The SDN list is available online at www.treas.gov/offices/enforcement/ofac/sdn/t11sdn.pdf.