rDNS searching HTTP logs?

I have 1123629205 bytes of logs on my server.

I was wondering, what would be a decent script to run a rDNS request on each of these IPs, with a 3 second timeout, then sort them into a list of different extensions?
For example, if I want to find where any .gov, .mil, and .edu addresses are connecting to and from, what would be the best way to do this?

My logs are like this:
THEIR.IPv4.IP.HERE MYDOMAIN.TLD [29/Jun/2010:07:30:50 +0000] "GET /somethinglol HTTP/1.1" 301 0 "http://referrer.tld/" "useragent"

Thanks in advance.

>>5
That's where you are wrong. You think that you could easily post Anonymously because you see yourself as above Anonymous, that at any point you could choose to be on his level and that would be fine. In reality, you are below him. He is controlled and restrained enough to neither need nor see a need for credit, personalities in the course of mature programming discussion.



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