Nmap Ping Sweep of Multiple Subnets

Nmap-Ping-Sweep.ps1

$subnets = @(
    '10.1.1.253/22'
    '10.10.10.252/24'
    '10.1.20.253/24'
    '10.120.10.252/22'
    '10.220.10.252/22'
    '10.254.254.253/24'
    '10.100.1.249/22'
    '10.200.1.249/22'
    '10.30.1.251/22'
    '10.40.1.251/22'
)

foreach ($subnet in $subnets) {Invoke-Expression "nmap -sn -T5 --min-parallelism 100 --max-parallelism 256 -n --host-timeout 10 -oG - $subnet" | Select-String -Pattern '#'; Write-Host}