What is an ECCN?

From Export.gov:

The five character alpha-numeric ECCN identifies the technology level and the
capabilities of an item which, in combination with the country of destination,
customer, and the intended application, determine if an export license is required
for a specific transaction or whether an item can be exported without a license.
The ECCN must be determined prior to shipment.

mbed TLS's ECCN number

mbed TLS has a US export control classification of ECCN 5D002 and is authorized for License Exception TSU under Section 740.13 of the U.S Export Administration Regulations (“EAR”).

For additional information about the EAR or LICENSEE’s obligations under those regulations, please refer to the U.S. Bureau of Industry and Security’s website.

Under the EU and UK export regulations, mbed TLS is not controlled as it falls under the open source rules.

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