Ah. Makes sense. I don’t think you have to specifically use cloudflare in that case. But I remember CNAME records can’t be used for everything… there are some limitations. I know I had issues with dyndns and a domain at some point. I just can’t remember the details. I know it didn’t work with every registrar / DNS provider. But some of them offer some magic to make some things work. I believe back then we ended up transferring that domain to some other hoster. And my domains are with a company that offers an API. I can just have a small script that changes around entries and do dyndns that way. But obviously you remember that records have a certain time to live and you want to set it correctly for your use-case.