# nmap (V. 2.54BETA22) scan initiated Wed Apr  4 01:16:01 2001.
 
Warning:  OS detection will be MUCH less reliable because we did not find at least 1 open and 1 closed TCP port
All 1542 scanned ports on  (216.72.239.30) are: filtered
Too many fingerprints match this host for me to give an accurate OS guess

# Nmap run completed at Wed Apr  4 01:18:42 2001 -- 1 IP address (1 host up) scanned in 161 seconds