I am trying to reconcile all of the host assets in Qualys against our current list of valid IP's. I have purchased 2500 IP's, there are 2484 IP's in my subscription, and 1862 unique hosts scanned. We only have about 1800 total IP's at our site. The way I am reading this is that there are around 630 or so IP's that I can remove from Qualys.
How can I produce a report lising all IP's and their last scan date, including those that may have never been scanned?