Thanks for the help Weaseal!
That did exactly what I needed, then all I had to do was just "grep" the hosts that were down.
I did check man pages for nmap and I saw the -v for verbose. I just thought that there were another command that would report only host down, and I could not find that.
Anyways, that did help me alot, and I was able to get a list all IPs available that I had.
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