Let’s cut through the confusion: rr4---sn-jvhj5nu-qufl.googlevideo.com is not a business or a website you’re supposed to visit. It’s a subdomain of googlevideo.com, which means Google owns it. The 404 error you see is completely normal — this is a backend server used to serve video content for YouTube or other Google services, not a page designed for human browsing.
If you’re wondering whether this domain is safe, the answer is yes. The SSL certificate is valid and issued by Google Trust Services, the server uses modern encryption, and there are no malware or phishing flags. The fact that it blocks search crawlers and has no contact page is expected for infrastructure of this kind. Google’s own reputation backs it.
So if you see this domain in your browser’s address bar or in a network log, don’t worry. It’s not a scam. It’s just a cog in the machine that makes YouTube work. There’s nothing to buy, log into, or sign up for here — and that’s by design.