Examples: setspn -R daserver1 It will register SPN "HOST/daserver1" and "HOST/{DNS of daserver1}" setspn -A http/daserver ...

Examples: 
setspn -R daserver1 
   It will register SPN "HOST/daserver1" and "HOST/{DNS of daserver1}" 
setspn -A http/daserver daserver1 
   It will register SPN "http/daserver" for computer "daserver1" 
setspn -D http/daserver daserver1 
   It will delete SPN "http/daserver" for computer "daserver1" 
setspn -F -S http/daserver daserver1 
   It will register SPN "http/daserver" for computer "daserver1"
    if no such SPN exists in the forest
setspn -U -A http/daserver dauser 
   It will register SPN "http/daserver" for user account "dauser" 
setspn -T * -T foo -X
   It will report all duplicate registration of SPNs in this domain and foo
setspn -T foo -F -Q */daserver
   It will find all SPNs of the form */daserver registered in the forest to
    which foo belongs