Blocking specific IP addresses for blogger.

Hello, I’ve been looking for a code that allows me to block IP in blogger for weeks. I have tried these lines but the redirect is not working for me.

<script type=”application/javascript”>
function getIP(json) {
if (json.ip = “11.333.55.7”) {
alert(“Blocked -> outside intruder”);
window.location = “https://www.google.com“;
}
}
</script>

<script type=”application/javascript” src=”https://api.ipify.org?format=jsonp&callback=getIP”></script>

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