If you've come across r2---sn-5uaeznld.googlevideo.com and wondered whether it's safe, the short answer is yes — but you're probably looking at the wrong part of the URL. This domain is a backend server used by Google to deliver video content, likely for YouTube. It's not a website you 'visit' in the normal sense, which is why you see a 404 error and the site blocks search engine crawlers. There's no store, no login page, and no data collection happening here.
For an infrastructure endpoint, the security setup is solid: a valid Google-issued certificate, modern encryption, and a clean record on all major threat lists. The one warning worth noting is that the server still supports TLS 1.0 and 1.1, two older encryption standards that have known weaknesses. In practice, your browser will negotiate the strongest available version (TLS 1.3), so the risk is minimal for most users.
Because this isn't a consumer-facing business, you won't find a privacy policy, contact page, or social media presence — that's all expected. If you're researching this domain for a security audit or out of curiosity, the key takeaway is: it's a legitimate Google server. There's no scam risk, no fake storefront, and nothing to buy. Just a piece of the internet's largest video infrastructure doing its job.