2020-9-16 · 9 FAM 102.5-3 Port-of-Entry Codes Used by the Department of Homeland Security, United States Customs and Border Protection. (CT:VISA-867; 06-24-2019) The following three-letter codes are used by Customs and Border Protection (CBP) in its internal communications to represent ports-of-entry (POEs). The list is furnished to Foreign Service posts ...