cs294-spare-2037.meraki.com is a subdomain that doesn't behave like a consumer website. It returns a 403 Forbidden error and can't be reached because the SSL certificate isn't valid. That means your browser would refuse to connect securely, which is a red flag for any site.
This subdomain lives under meraki.com, a legitimate Cisco domain, so the parent company is known. But that's where the reassurance ends. There's no about page, no contact information, and no history in the Wayback Machine. It's impossible to tell what this subdomain is supposed to do or who set it up.
If you're wondering whether cs294-spare-2037.meraki.com is a scam, the bigger question is whether it's usable at all. A site that's effectively offline with a broken certificate can't be trusted for anything. The safest move is to stay away until there's a clear reason to visit and the technical issues are fixed.