I do. 4 or 5 users and several computers plus virtual server members. I still use Linux for DNS which works surprisingly well after the initial setup.
I did it half for practice and half for fun, but having the authentication backend makes it good enough to keep around.
Just want to clarify - after looking at Porkbun’s DNS offerings, it does not appear they do DDNS either. Is that correct? So they are not any better than SquareSpace for that service. Porkbun does have an API interface.
It looks like Namecheap has DDNS support (at least I get valid-looking results when I search for that on their website).
I haven’t changed registrars in 10+ years. I am in the same boat re. Google -> SquareSpace. Is DDNS deprecated in favor of API’s across the board? It looks more complicated to set up.
There are some SRV and other records which you add for the AD-provided services (kerberos, gc, ldap). This allows your Windows clients to find the domain controllers for authentication via your non-Windows DNS. I think I might have followed a Microsoft or other article when doing the initial setup, but once getting those items in place I haven’t had many issues.