Search and listing hostnames from IPv4 with PowerShell

serch_n_list_hostname_by_ip.ps1

$network = "192.168.."
1..254 | ForEach-Object {
    $ip = $network + $_
    $ping = Test-Connection -ComputerName $ip -Count 1 -Quiet
    if ($ping) {
        try {
            $hostname = ([System.Net.Dns]::GetHostByAddress($ip)).HostName
        } catch {
            $hostname = $_.Exception.Message
        }
        Write-Output "$ip - $hostname"
    }
}