Hi, I started using CloudFlare DNS a month ago and I noticed some domains are not being resolved when I use them, but they do when I don’t use CloudFlare DNS. Some of them get fixed after a while, but others not. For example, with rae.es, a popular domain of the Royal Spanish Academy, the DNS are not resolving it. This domain was registered for first time in 1994 and has de following DNS servers:
Any hint of what is happening and how to fix it?