…ein kleines, hilfreiches Script welches ich aus einem Technetartikel kopiert habe…
( https://social.technet.microsoft.com/wiki/contents/articles/18996.list-all-spns-used-in-your-active-directory.aspx )

#Set Search
cls
$search = New-Object DirectoryServices.DirectorySearcher([ADSI]“”)
$search.filter = “(servicePrincipalName=*)”
$results = $search.Findall()

 

#list results
foreach($result in $results)
{
       $userEntry = $result.GetDirectoryEntry()
       Write-host "Object Name = " $userEntry.name -backgroundcolor "yellow" -foregroundcolor "black"
       Write-host "DN      =      "  $userEntry.distinguishedName
       Write-host "Object Cat. = "  $userEntry.objectCategory
       Write-host "servicePrincipalNames"
       $i=1
       foreach($SPN in $userEntry.servicePrincipalName)
       {
           Write-host "SPN(" $i ")   =      " $SPN       $i+=1
       }
       Write-host ""

}