Finding a number of unused IP addresses based on subnets

Question

Hello,
I am new in PS so I would ask you for understanding in below matter.
I need to find a number of unused IP in some subnets in my organization for planning purposes.  I would like to use input file where I could  enter a few subnets, then search all subnet range looking for not responding ip addresses. In output csv
file I would like to have 2 columns: "Subnet" and "Number of free IP".
Can I use "New-Object System.Net.Networkinformation.ping" class as below to search not responding IP and then count it in some way ?
$Connect = New-Object System.Net.Networkinformation.ping
for ($i=1; $i -le 254; $i++)
    $IP = "192.168.0." + $i
    $Status = ($Connect.Send("$IPAddress", 1)).Status
        if ($Status -eq "TimedOut")
        Write-Host "$IP is free"
Regards,
Mike

Answer 1

This one is working but it is not solving my issue. I need to count amount of "TimedOut" results and then
write it in csv output file.
e.g. 2 columns
subnet, 192.168.0.
NumberOfTimedOut_IP, 67 
Help Export-Csv
You could start by learning PowerShell.
https://technet.microsoft.com/en-us/scriptcenter/dd742419.aspx
You can also look in the repository as there are numersou sripts there that do this:
https://technet.microsoft.com/en-us/scriptcenter/dd742419.aspx
We do not write scritps on demmand but canhelp you learnhow to write your script.
Post back with a specific scripting question when ready.
¯\_(ツ)_/¯