Just found a major limitation of Enhance while trying to move some clients over. We ourselves, and some of our customer have their own IP space from ARIN, and as such must have R-DNS records for reverse IP dns lookups. With all other control panels we use, we can setup non customer associated and non website associated zones. Enhance does not appear to allow this.
For example, one client has the following /24, 64.64.XXX.0/24
Therefore we must host records in the appropriate named zone, XXX.64.64.in-addr.arpa
Enhance does not have a way to add zones without them being attached to a website or domain.
This is something any large provider is going to need, and is something anyone who has assigned IP space and controls their own rdns will use, as outlined by the Internet Assigned Numbers Authority. https://www.iana.org/domains/arpa