MajorGeeks - Angry IP Scanner (aka ipscan) is a free, fast and easy-to-use network scanning utility that allows you to easily scan IP addresses, ports and more - https://www.majorgeeks.com/files/details/angry_ip_scanner.html | Facebook
Free network IP scanners – 4sysops
Top 4 Ping Sweep Tools to Ping a Range of IP Addresses
windows - How can I ping a range of IP addresses simultaneously - Super User