Possible to load page resources over HTTPS using IP?

I'm kind of curious if something like this is possible.

I have a page located at: https://example.com/product1/
In the code of that page I am loading a PHP file

Code (Text):

<script>
    (function(d, s) {
        var js, upxf = d.getElementsByTagName(s)[0], load = function(url, id) {
            if (d.getElementById(id)) {return;}
            if2analytics = d.createElement("script");if2analytics.src = url;if2analytics.async = true;if2analytics.id = id;
            upxf.parentNode.insertBefore(if2analytics, upxf);
        };
        load("http://163.48.122.201/analytics/static/landing.php?lpip=311", "upxif");
    }(document, "script"));
    </script>

Obviously I'm getting an "unsafe" script warning for loading this file over HTTP.
Can I somehow serve this over HTTPS? Not sure if I can pull an SSL certificate for an IP...

---

 

Hmm...so no way to do it via IP.

Weird...I tested navigating directly to the page resource using HTTPS and it gives me a connection is not private warning. When I edit HTTP to HTTPS inside of the embedded script, I receive no warnings on the page or "Load unsafe scripts" warning. Perhaps my problem is solved?

 

Hmm I guess I hadn't cleared cache before I tested last time.

Code (Text):

GET https://163.48.122.201/analytics/static/landing.php?lpip=311 net::ERR_INSECURE_RESPONSE

Only solution to put it on an SSL domain?

 

Ended up just solving this by getting a domain.
Is there no way to get an SSL cert for my domain using a secondary IP on the server?
When setting up LetsEncrypt it's detecting my primary server IP although I have a secondary IP properly installed and the domain's A records point to the secondary.

 

CMM menu option 2 after typing "Y" to generate a self-signed cert and LetsEncrypt vert.
It is comparing server IP to domain A record and telling me they don't match.