[kj4kjl@toolbox ~]$ ipcalc -nb 23.24.97.73 255.255.255.248 | sed '5q;d' | cut -d':' -f2 | tr -d ' ' > net; cat net ; cat net | xargs fping -s -a -r 3 -g
23.24.97.72/29

       6 targets
       0 alive
       6 unreachable
       0 unknown addresses