Are you interested in our Early Access Program (EAP)? This program allows you to preview code, test in your lab and provide feedback prior to General Availability (GA) release of all Infoblox products. If so, please click the link here.
You can use the discovery tool to detect active IP addresses in a network. Network discovery is used by Network Insight / NetMRI. There is no harm is performing this. You would be doing it purely for your own management of the network/DHCP ranges.