Expands a CIDR Range to it's constituent IP's

Get-CIDRRange.ps1

function Get-CIDRRange {
    <#
    .SYNOPSIS
        Expands a CIDR Range
    .DESCRIPTION
        Expands a CIDR Range to it's constituent IP's
    .EXAMPLE
        Get-CIDRRange -CIDR "192.168.1.0/24"
    #>
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $true)]
        [string]$CIDR
    )

    $parts = $CIDR -split "/"
    $ip = $parts[0]
    $prefix = $parts[1]

    $ipParts = $ip -split "\."
    $ipInt = 0
    for ($i = 0; $i -lt 4; $i++) {
        $ipInt = $ipInt -bor ($ipParts[$i] -shl (24 - $i * 8))
    }

    $mask = ([Math]::Pow(2, 32) - 1) -shl (32 - $prefix)
    $start = $ipInt -band $mask
    $end = $start -bor (-bnot $mask)

    for ($i = $start; $i -le $end; $i++) {
        $ip = [System.Net.IPAddress]::Parse($i)
        $ip.IPAddressToString
    }
}