An Export Control Classification Number (ECCN) is a five-digit number used to classify goods that are subject to export control restrictions. It is maintained by the US Department of Commerce. You can search the full Commerce Control List (CCL) on the official BIS website. The ECCN is similar in purpose to the Standard Individual Export Licence (SIEL) used in the UK for controlled goods.
The ECCN number categories an item on the basis of the type of the product, technology, or software and its technical parameters. Businesses exporting controlled goods must also conduct denied party screening to ensure they are not shipping to restricted entities, and use restricted goods screening to verify items are permitted for export. Accurate product classification is essential to determine the correct ECCN for any item.