Almost all ClouDNS domains are not free DNS
ClouDNS owns a ton of domains - cloudns.info, cloudns.org, cloudns.eu, cloudns.cc, and many more. Each says something like "cloudns.info - provides Free subdomains to customers that use Dynamic DNS". You'd think at least some of these would be available as free subdomains.
They're not. Everything except for ip-ddns.com and ddns-ip.net isn't included on the free plan.
I spent 9 emails over 3 days with support over this - they diligently defended that it's technically correct, because everything is free if you're already paying and if not there are some options.