push-rtmp-vr-l26.douyincdn.com is not a website you would visit in a browser. It's a server address used by Douyin's content delivery network to stream video. That explains why it returns a 400 error and lacks any contact information, privacy policy, or about page — none of those things belong on a piece of infrastructure.
For a CDN node, the important question is whether it's secure and reliable. The connection uses up-to-date encryption from a trusted certificate authority, and neither Google Web Risk nor any DNS blacklist has flagged it. The server does accept older TLS versions, which is common for CDNs that need to work with a wide range of devices.
Because this domain isn't a store or a service you sign up for, the usual warnings about hidden ownership or missing legal pages don't really apply. If you're wondering 'is push-rtmp-vr-l26.douyincdn.com a scam', the evidence says no — it's just a technical part of a much larger platform.