If you've come across i.gremicdn.pl, you're likely looking at a subdomain used for serving content — probably images or static files. The domain itself (gremicdn.pl) has been around for four years, and the technical setup is clean: a valid SSL certificate, Cloudflare protection, and no blacklist history. That's all good news.
But there's a catch: this subdomain currently returns a 404 error. That means it's not actively serving anything right now. For a CDN endpoint, that's unusual and could indicate the subdomain is no longer in use or was misconfigured. It doesn't mean it's a scam — just that whatever it was supposed to serve isn't available.
Because the site isn't accessible, we can't see what it was used for. That makes it hard to say whether i.gremicdn.pl is safe to load from, but the infrastructure itself is solid. If you're seeing this domain in your browser's network requests, it's likely from a site that once used it. The lack of contact info or legal pages is normal for a technical subdomain like this. Overall, the signals point to a legitimate but dormant CDN resource, not a fake or dangerous site.