fping

fping is a network tool similar to ping, but designed for bulk pinging. It allows users to ping multiple IP addresses at once and reports which hosts are active or reachable. Unlike ping, which pings one host at a time, fping can ping a range of IPs efficiently.

fping -a -g [IP]/[CIDR]

-a: only show targets that are alive
-g: generate a list of IP to ping based on the specified subnet
-s: spoof the source IP address for pings

fping -a -g 192.168.1.0/24
fping -a -g 10.0.0.0/16 -s 192.168.1.100