Update: Would someone mind explaining why I have a negative rating on this node? Is it factually inacurate? Was my tone inappropriate? Perhaps I didn't say it correctly. If there are factual issues with this node, then I would like to be educated on them. Otherwise, I will chalk it up to bad coffee on the part of the voter or some such trivia. -thx

IIRC, unless the all of the reverse address pointers (PTR record) are set up for the host, you may not be able to do this. For example, you can have a host that you can find the IP address for giving it a name, but that name will never be found by looking for the IP address.

Think, for example, of a host on a DSL line that has a dynamic DNS entry. Your ISP doesn't know about the dynamic DNS entry, but it "owns" the PTR record for your IP address.

However, if all of the addresses are under your control, then refer to the other nodes on this thread.