Nmap uses a discovery feature to find hosts in the network that can be used to create a network map. Network admins value it for its ability to gather information from the host about the Operating System, services, or ports that are running or are open, MAC address info, reverse DNS name, and more. Scalability is the other big reason why network admins love Nmap. It can scan a single host or an entire network with “hundreds of thousands” of machines. Nmap is the best tool for quickly map the hosts in your network.