You should have a 1.168.192.in.addr-arpa if you have a 192.168.1.0/24 network.
That zone would contain just 1 PTR record.
I didn't get it.
What is PTR? and why would I need a 1.168.192?

Wouldn't it be kind of pointless (outside educational purposes) to run your own DNS server on such a small network?
That is one of my reasosns the other is I can't find one free.