This isn't a typical website you'd browse or buy from — it's a server address used by YouTube to stream video. The domain rr9---sn-bvvbaxivnuxqjvhj5nu-nx56.googlevideo.com is a subdomain of googlevideo.com, which is owned by Google. When you watch a YouTube video, your browser connects to servers like this one to fetch the actual video file. That's why you see a 404 error if you try to visit it directly: there's no homepage, just a backend endpoint.
For this kind of infrastructure, the typical trust signals (contact info, privacy policy, social media) don't apply. What matters is security and association with a known company. The server uses a valid Google-issued certificate, modern TLS encryption, and isn't on any blacklists. The only minor issue is that it still supports older, deprecated TLS versions, but that's a common trade-off for compatibility in large-scale video delivery.
If you're wondering whether rr9---sn-bvvbaxivnuxqjvhj5nu-nx56.googlevideo.com is safe, the answer is yes — it's a legitimate part of Google's infrastructure. There's no scam here, and no reason to avoid it when it appears in your browser's network requests. Just don't treat it as a website to visit; it's a behind-the-scenes server doing its job.