What happened?
You've requested a page on a website (archive.is) that is on the Cloudflare network. Cloudflare is currently unable to resolve your requested domain (archive.is)."
I just googled and found plenty of threads stretching back months. It seems to have to do with Archive.is returning wrong IP addresses to Cloudflare's DNS queries. They are apparently telling folks to use Google DNS but the configuration of which IP address to return is entirely in their hands. I'm still quite confused by the situation, to be honest.
What happened? You've requested a page on a website (archive.is) that is on the Cloudflare network. Cloudflare is currently unable to resolve your requested domain (archive.is)."
Domain blocked?