Public/Get-IPRange.ps1

<#
    
    .SYNOPSIS
        Get all IPs within the specified range.
    
    .DESCRIPTION
        See .SYNOPSIS

    .PARAMETER start
        This parameter is OPTIONAL.

        TODO

    .PARAMETER end
        This parameter is OPTIONAL.

        TODO

    .PARAMETER ip
        This parameter is OPTIONAL.

        TODO

    .PARAMETER mask
        This parameter is OPTIONAL.

        TODO

    .PARAMETER cidr
        This parameter is OPTIONAL.

        TODO

    .EXAMPLE
        # Open an elevated PowerShell Session, import the module, and -

        PS C:\Users\zeroadmin> Get-IPRange -Start 192.168.2.4 -End 192.168.2.50
    
#>


function Get-IPRange {
    [CmdletBinding()]
    param ( 
        [string]$start, 
        [string]$end, 
        [string]$ip, 
        [string]$mask, 
        [int]$cidr 
    ) 
    
    function IP-toINT64 () { 
        param ($ip) 
    
        $octets = $ip.split(".") 
        return [int64]([int64]$octets[0]*16777216 +[int64]$octets[1]*65536 +[int64]$octets[2]*256 +[int64]$octets[3]) 
    } 
    
    function INT64-toIP() { 
        param ([int64]$int) 
    
        return (([math]::truncate($int/16777216)).tostring()+"."+([math]::truncate(($int%16777216)/65536)).tostring()+"."+([math]::truncate(($int%65536)/256)).tostring()+"."+([math]::truncate($int%256)).tostring() )
    } 
    
    if ($ip) {$ipaddr = [Net.IPAddress]::Parse($ip)} 
    if ($cidr) {$maskaddr = [Net.IPAddress]::Parse((INT64-toIP -int ([convert]::ToInt64(("1"*$cidr+"0"*(32-$cidr)),2)))) } 
    if ($mask) {$maskaddr = [Net.IPAddress]::Parse($mask)} 
    if ($ip) {$networkaddr = new-object net.ipaddress ($maskaddr.address -band $ipaddr.address)} 
    if ($ip) {$broadcastaddr = new-object net.ipaddress (([system.net.ipaddress]::parse("255.255.255.255").address -bxor $maskaddr.address -bor $networkaddr.address))} 
    
    if ($ip) { 
        $startaddr = IP-toINT64 -ip $networkaddr.ipaddresstostring 
        $endaddr = IP-toINT64 -ip $broadcastaddr.ipaddresstostring 
    } else { 
        $startaddr = IP-toINT64 -ip $start 
        $endaddr = IP-toINT64 -ip $end 
    }
    
    for ($i = $startaddr; $i -le $endaddr; $i++) {
        INT64-toIP -int $i
    }
}

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