Windows Server 2016 Datacenter

 slmgr /ipk CB7KF-BWN84-R7R2Y-793K2-8XDDG
 slmgr /skms kms.digiboy.ir
 slmgr /ato

Windows Server 2016 Standard

slmgr /ipk WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY
slmgr /skms kms.digiboy.ir
slmgr /ato