Blacklistcheck.ps1 - checks an IP address in various blacklists (DNSBL, RBL), in PowerShell

Blacklistcheck.ps1

# blacklistcheck.ps1 - PowerShell script to check
# an IP address blacklist status
# 
# Follow me on Twitter: @Jan_Reilink
# 
# Steps:
# 1. IPv4 IP address input from the command-line:
#    .\blacklistcheck.ps1 1.2.3.4
# 2. reverse the IP address: 1.2.3.4 becomes 4.3.2.1
# 3. append the blacklist zone, e.g .cbl.abuseat.org. 
#    to the reversed IP address
# 4. perform a DNS lookup
# 5. print out the result
 
param (
  [string]$ip = $(throw "ip is required.")
 )
 
# Project Honey Pot API-key, create a free account 
# and get yours @ 
# https://www.projecthoneypot.org/create_account.php
[static]$httpBL = "[my-API-key]"
  
# Reverse IP address stored in $ip, let's hussle 
# those IP octets around a bit
$ipParts = $ip.Split('.')
[array]::Reverse($ipParts)
$ipParts = [string]::Join('.', $ipParts)
 
# An array of blacklists to perform checks on
# You can add your own blacklists to this list
$blacklists = "dnsbl.httpbl.org", `
    "cbl.abuseat.org", `
    "dnsbl.sorbs.net", `
    "bl.spamcop.net", `
    "zen.spamhaus.org", `
    "b.barracudacentral.org", `
    "bad.psky.me"
 
foreach ( $blacklist in $blacklists ) {
    if ( $blacklist -contains "dnsbl.httpbl.org" ) {
        # Add your httpBL API-key
        $lookupAddress = $httpBL + "." + $ipParts + ".dnsbl.httpbl.org."
    }
    else {
        $lookupAddress = $ipParts + ".$blacklist."
    }
    try {
        [System.Net.Dns]::GetHostEntry($lookupAddress) | select-object HostName,AddressList
    }
    catch {
        # The try{} catch{} is needed to catch DNS lookup 
        # errors when an IP address is not blacklisted.
        # Yes, this is annoying
        Write-Host "No blacklisting for $ip found in $blacklist"
    }
}

Article and more information is here:
https://www.saotn.org/powershell-blacklist-check-script/