PowerShell - Discover Entire Subnet (Read-Host)

Save as a subnetinfo.ps1 or self named, This will step through every subnet through 255 and if there is a DNS entry will resolve to hostname.

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$A = Read-Host "Enter Subnet to walk through 255 range (ex 10.10.202.) resolving live IP to hostname"

$net = "$A"

0..255 | foreach {$r=(Resolve-DNSname -ErrorAction SilentlyContinue $net$_ | ft NameHost -HideTableHeaders | Out-String).trim().replace("\s+","").replace("`r","").replace("`n"," "); Write-Output "$net$_ $r"} | tee c:\temp\ip_hostname.txt

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