If you've come across avpk-a154ke3r2uhsz3-0.na.api.amazonvideo.com and wondered whether it's safe, the important thing to understand is what this URL actually is. It's a subdomain under amazonvideo.com, Amazon's own video service. The technical signals — clean blacklists, modern encryption, a valid SSL certificate issued by DigiCert, and hosting on AWS CloudFront — are exactly what you'd expect from Amazon's infrastructure.
So is avpk-a154ke3r2uhsz3-0.na.api.amazonvideo.com a scam? Not at all. But you can't visit it like a normal website either. The server returns a 404 error, meaning that specific path doesn't point to any content. That's typical for backend API endpoints that aren't meant to be accessed through a browser.
If you were expecting a working page or a service, this URL won't deliver. But there's no evidence of fraud or malicious intent. It's just a piece of Amazon's internal network that happens to be publicly resolvable. For any real Amazon-related concerns, stick to the main amazon.com domains.