This address belongs to a subdomain under googlevideo.com, which is a Google-owned domain used for serving YouTube videos. But the specific server at rr1.sn-vgqsrnzs.googlevideo.com isn't working like a normal website. When you try to visit it, the SSL certificate doesn't match the address, and the server returns a 404 error instead of any content. That combination makes it unusable for anyone trying to access it directly.
Unlike a typical consumer site, this is likely a backend server meant only for internal communication. The lack of an about page, privacy policy, or contact information is perfectly normal for that role. But the broken certificate is a real technical failure — it means the server isn't configured correctly, and any attempt to connect would fail or be insecure. For a Google-owned host, this is unusual and suggests the subdomain may be outdated or misrouted.
If you came across this link somewhere and wondered 'is rr1.sn-vgqsrnzs.googlevideo.com a scam', the answer is that it's not a deliberate scam, but it's also not a functioning site you should interact with. There's no content, no service, and no legitimate reason to visit. Most reputable video servers don't have SSL errors. If you need to access a Google video service, stick to known URLs like youtube.com or googlevideo.com directly.