We have multiple sites with multiple subnets. We have mandated that the admins at those sites enter DNS names for all devices that exist on the network. (anything with an IP gets a name) I want to be able to audit this and make sure this has been done.
I am able to run an individual network scan on each subnet but that takes time. I would like a way to kick off a scan that runs through all subnets once a week and gives me an output file with a list of names and IPs. (preferably csv) I have tried to do this nmap but getting a nice list of IPs and their corresponding names is not easy.