Collision detection by reverse DNS lookup?

[John Craig]

I am looking to set up DHCP in an environment that does not support
Dynamic DNS.  There are many servers that will not be using DHCP in
this environment.  Ideally, I would like to do collision detection
both by ping (which I know can be done) and reverse DNS lookup.

I know that ping collision detection is possible.  How about reverse DNS lookup?

Thanks for your thoughts!