Seeking Google reverse DNS delegation contact

Does anyone here happen to know who at Google I should be talking
to if I want to ask a question about their reverse DNS services?

I'd just like to ask someone there why anyone at Google thought
that it would be a Good Idea for Google to provide reverse DNS
services for the IP address block, a block that
appears to be chock-full to the brim of snowshoe spamming domains.

P.S. I gave up on the "evil" part some time ago. Now, I'm willing to
settle for them just not being spammish.