This question already has an answer here:
We have a ton of client sites pointing to ns1.hostingcompany.com. I'd like to create whitelabel nameservers so we can easily move sites/servers as needed.
For example, I'd like to try Cloudflare which gives me their own nameservers, but I don't want to have to update every domain only to decide a year from now to cancel and set them all back.
Can I (without problems) set up CNAME records for:
...and then update all of my domains, ultimately pointing that CNAME to whatever nameservers I want?
This would allow me to point those at Cloudflare's nameservers (for example) but then, if I changed services 6 months from now, I could point them to another nameserver, only changing two records at my whitelabel domain rather than two records at each site's domain.