As noted in previous posts the 3 ways to determine ECCN (Export Control Classification Number) are: 1) Self Classify; 2) Consult Manufacturers; 3) Request a BIS ruling.
ECCN is the first step in the licensing or NLR (No License Required) decision. A number of companies make their classification info available to the public. Here is the link:
Publicly Available Classification Information
Contact firstname.lastname@example.org for classification assistance.