Is media.fuio11-1.fna.whatsapp.net a scam? The short answer: almost certainly not, but the site isn't functioning right now. This is a subdomain of WhatsApp's parent domain (owned by Meta), and it appears to be a media delivery server. When you visit it, you get a Facebook-branded error page saying something went wrong. That's consistent with a temporary outage on a legitimate backend system.
The URL has a valid encryption certificate and isn't flagged by any security databases. The one odd detail is the hosting provider β it's registered to a telecom company in Ecuador rather than one of Meta's usual data centers. That could mean this is a regional CDN node, or it could be a red flag if you were sent here from an unsolicited message. If you landed here by mistake or from a friend's legitimate message, there's nothing to worry about. If a stranger directed you here to download something or enter data, that's a different story. In that case, treat it like any unknown link: don't interact and don't provide personal information. For now, the safest move is to ignore the URL until WhatsApp confirms their servers are back up.