Finderyysw.video.qq.com is not a normal website you'd visit directly. It's a specific subdomain under Tencent's video.qq.com infrastructure, likely used for internal purposes like content delivery or API endpoints. The 403 Forbidden response you see is intentional — the server is blocking non-browser or unauthorized access.
For context, most legitimate video platforms have many such subdomains that aren't intended for public browsing. The parent domain (qq.com) is one of China's largest internet properties, and Tencent is a publicly traded company. There's no evidence that this address is associated with scams or malware.
If you're wondering whether finderyysw.video.qq.com is safe, the answer is yes in the sense that it's not malicious. But you also can't do anything with it — it's a dead end for regular users. If you're reviewing links or ads pointing to this domain, treat them as likely broken or misconfigured rather than dangerous.