Find who joined a computer to a domain

$NoInfo = $null
$Offline = $null
$List = $null

#Get-Content unknowns.txt | foreach {
Get-ADComputer  -Filter 'OperatingSystem -like "*Windows server*"' -Properties * | foreach {
    $FQDN = $_.DNSHostName 
    $Path = "\\$FQDN\c`$\Windows\debug\NetSetup.log"
    if (Test-Connection $FQDN -Count 1 -ErrorAction SilentlyContinue) { 
        if (Test-Path $Path) {
            write-host "`n`nChecking $FQDN..."        
            $User = ($($(Select-String -Path $Path -Pattern "lpAccount: " -CaseSensitive)  -split " ")[3])
            $User
            [array]$List += Write-Output $FQDN";"$User

        } 
    else {[array]$NoInfo += $FQDN}
    } 
    else {[array]$Offline += $FQDN}
    #sleep 5
}
$list