Network Scanner (LizardSystems) is described as 'Network Scanner is an IP scanner for scanning both large corporate networks with hundred thousands of computers and small home networks with several computers. The program can scan both a list of IP addresses or computers and ranges of IP addresses' and is a IP Scanner in the network & admin category. There are more than 10 alternatives to Network Scanner (LizardSystems) for a variety of platforms, including Windows, Linux, Mac, Web-based and Android apps. The best Network Scanner (LizardSystems) alternative is Angry IP Scanner, which is both free and Open Source. Other great apps like Network Scanner (LizardSystems) are NetPeek, Advanced IP Scanner, Spiceworks and Wireless Network Watcher.
Have used this for years and it always yields consistent results. Outputs to a file and allows user to copy IP, MAC, etc. info into other programs or routers.