I did not immediately see how to do this. My lack of understanding of a simple method using the DNS server in ZS was that I’d have to add a domain for each of the many entries involved. Seemed like too much work.
My solution was to put all those entries into the hosts file on each computer on my LAN. To make that simpler to manage, at least for Macintosh and Unix computers, you can setup Dropbox and put the hosts file there then make a symbolic link from /etc/hosts to the copy in the Dropbox. The end result is when a new phishing site is identified, edit the hosts file in Dropbox to map the IP address to your server and all the Macs and *nix machines on your LAN will now use it. Not sure if its possible to do this same thing with a Windows computer but it might be.