(You can add multiple scopes to a single server). With the size of your subnets, I don't see any issue with setting up two scopes to handle even massive amounts of epehemeral VMs. Also, just tune your ...

At work we have a DDNS server, a web server, and a switch with a dozen PCs connected to it. I'd like to set up the DDNS server on its own subnet (192.168.5.x), the web server on (192.168.10.x), and ...