Reads a list of IPs and check their hostname. Save it in seperate files - resolved and unresolved

Get_Hostname_For_Unmanaged_Dectector.ps1

Clear
$scriptpath = $MyInvocation.MyCommand.Path
$dir = Split-Path $scriptpath
$source =  $dir + "\IPlist.txt"
$computers= gc $source
$DNS_Resolve = $dir + "\DNS_Resolved.csv"
Clear-Content $DNS_Resolve -ErrorAction "SilentlyContinue"
$DNS_Unresolve = $dir + "\DNS_Unesolved.csv"
Clear-Content $DNS_Unresolve -ErrorAction "SilentlyContinue"

foreach ($computername in $computers)
{
	 try
        {
            $HostName = [System.Net.Dns]::GetHostByAddress($computername).HostName 
            write-host "Hostname for $computername is :" $HostName -ForegroundColor GREEN
            "$computername^$HostName" | Out-File -Enc UTF8 -Append $DNS_Resolve
        }

        catch
        {
        write-host "Could not resolve $computername" -ForegroundColor RED
        "$computername" | Out-File -Enc UTF8 -Append $DNS_Unresolve
        }
 
     
}