All keys on my site http://myfreeproductkey.com. are install keys . They will expire after 30 days for Microsoft Office and 180 days for Microsoft Windows . So I think you needn’t report DMCA to me .
Some keys I get from internet or Microsoft : https://technet.microsoft.com/en-us/library/dn385360.aspx
If you want to report DMCA , please send email to me : firstname.lastname@example.org