When a domain has been registered for 27 years and has no history of blacklisting or security warnings, that counts for a lot. Rivalry.com is clearly not a fly-by-night operation. The site has a privacy policy, terms of service, and a legal entity disclosure, which suggests the owner takes basic compliance seriously.
Where things get a little fuzzy is transparency. Because the homepage is a JavaScript-rendered single-page app, standard automated checks couldn't find a contact page or social media links. That doesn't mean they don't exist — you'd need to visit the site in a browser to confirm. For a site that doesn't appear to sell products or handle sensitive data, this is a minor concern rather than a dealbreaker.
If you're considering using rivalry.com for something that requires trust — like submitting personal details or making a purchase — you should take a few minutes to browse the site in a real browser and look for an "About" or "Contact" page. Most legitimate businesses make that info easy to find. A 27-year-old domain with no red flags is reassuring, but the lack of visible contact info means you should verify before sharing anything sensitive.