- Plesk Expand
Plesk Expand license number can be found at:
Expand control panel -> Server -> License Management -> License key ID
Also it is shown in the title of the browser window when you are logged into Expand control panel under administrator account.
If Expand CP is not accessible you can login to the Expand server via SSH and use the following command to obtain the license number:
# grep 'EXP\\.' /usr/local/expand/etc/expand.key