The Moisture Sensitivity Level (MSL) rating for IDT parts is already available on our website www.idt.com.
For example, let us consider the 651 part family. When you enter this part number in the search bar located on the top right corner of www.idt.com (Auto mode), it will take you to the product's landing page: http://www.idt.com/651
Under the 'product options' section, next to the orderable part id 651MILFT, click on the package code "DCG8". This will open a pop-up and you can see the MSL rating in it.
For other questions not addressed by the knowledge base, please submit a technical support request.