Results Comparison -- Default Discovery

# nmap -sP -n -T4 -iL 50K_IPs

Starting nmap ( http://www.insecure.org/nmap/ )
[...]
Host 167.154.239.120 appears to be up.
Host 67.8.112.96 appears to be up.
Host 143.169.56.108 appears to be up.
Nmap finished: 50000 IP addresses (1770 hosts up) scanned in 1867.977 seconds