DNS Made Easy - Dynamic DNS Updater in PowerShell

dnsmadeeasy.ps1

$ID = 123456789
$PASSWORD = "%68%75%6e%74%65%72%32"
$DIR = $env:USERPROFILE
$WHATSMYIP_URL = "https://ifconfig.me/ip"

$oldip = (Get-Content "$DIR\ddns-publicip.txt")
$ip = (Invoke-RestMethod $WHATSMYIP_URL)

if ($ip -ne $oldip) {

    $url = "https://cp.dnsmadeeasy.com/servlet/updateip?id=$ID&password=$PASSWORD&ip=$ip"

    $result = (Invoke-RestMethod $url)
    Write-Output "$(Get-Date) $result" >> "$DIR\ddns-result.txt"

    if ($result -eq "success") {
        Write-Output $ip > "$DIR\ddns-publicip.txt"
    }
}