lichess.com is returning a 404 not found right now. The IP is another new one today. Since the web server is still up and the DNS is still registered, it could be coming back at any time.
It could also be targeting specific devices or browsers. Yesterday it would redirect to a fake chrome add-on for chrome, but other sites for firefox. Today, both FF and Chrome (latest versions) just give the 404, but hitting it with curl attempts a redirect to http://survey-winner.com/ which doesn't resolve.