Interesting ports on dt020nfd.san.rr.com (204.210.9.253):
(The 1536 ports scanned but not shown below are in state: closed)
Port       State       Service
21/tcp     open        ftp                     
53/tcp     open        domain                  
80/tcp     open        http                    
135/tcp    open        loc-srv                 
139/tcp    open        netbios-ssn             
443/tcp    open        https                   

Remote operating system guess: Windows NT4 / Win95 / Win98

# Nmap run completed at Wed Jun  6 04:57:51 2001 -- 1 IP address (1 host up) scanned in 50 seconds