1380264.fls.doubleclick.net is not a typical website you would browse. It's a subdomain of doubleclick.net, Google's advertising and tracking platform. That means it's part of the infrastructure that helps websites serve ads or measure campaign performance. Most visitors will never land on this page directly, and that's by design.
For an ad-server endpoint, the signals we see are exactly what you'd expect. It's hosted on Google's own network, uses a valid SSL certificate, and has no history of malware or blacklisting. The lack of contact pages, privacy policies, or social media links is normal in this context. The parent company (Google) handles all of that at the main domain level.
If you're asking whether 1380264.fls.doubleclick.net is fake or a scam, the evidence says no. It's a legitimate piece of the ad tech ecosystem. There's no reason to distrust it, and no action needed from ordinary users.