I want to switch over to Cloudflare but not sure how to do so in my case, without breaking anything.
I have a domain
mydomain.com as well as wildcard subdomains pointing
However, my customers have their own domains which are pointing to mine through ALIAS records.
They create an ALIAS record for
theirdomain.com pointing to
mydomain.com, of which I use dynamic NGINX virtual hosts to point them accordingly.
Does Cloudflare support this (on the free plan)?
There’s a couple hundred of these custom domains, would they be able to keep the ALIAS record there?
Or would I have to contact them to update their records - and have them create an A Record pointing to the Cloudflare IPs?