Results Comparison - Intense Discovery

# nmap -sP -PE -PP -PS21,22,23,25,80,113,21339 -PA80,113,443,10042 --source_port 53 -n -T4 -iL 50K_IPs
[...]
Host 143.169.56.108 appears to be up.
Host 143.79.104.9 appears to be up.
Host 68.221.219.76 appears to be up.
Nmap finished: 50000 IP addresses (2698 hosts up) scanned in 7796.971 seconds