Unfortunately, the contract for the Combined Nomenclature Search Engine has expired, and we are no longer able to offer it to our website visitors.
The United States Census Bureau offers a similar tool, which facilitates US Schedule B Export classification, and is accessible for free at
https://uscensus.prod.3ceonline.com. Please note that only the first 6-digits of the Schedule B number are the same as the first 6-digits of the CN number.
Alternatively you may refer to any of the helpful links provided below.