shawn@shawn-laptop:~$ nc -zv hack3r.com 22
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 22 (ssh) : Connection refused
shawn@shawn-laptop:~$ nc -zv hack3r.com 25
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 25 (smtp) : Connection refused
shawn@shawn-laptop:~$ nc -zv hack3r.com 280
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 280 (?) : Connection refused
shawn@shawn-laptop:~$ nc -zv hack3r.com 80
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 80 (www) open
shawn@shawn-laptop:~$ nc -zv hack3r.com 110
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 110 (pop3) : Connection refused
shawn@shawn-laptop:~$ nc -zv hack3r.com 143
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 143 (imap2) : Connection refused
shawn@shawn-laptop:~$ nc -zv hack3r.com 783
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 783 (spamd) : Connection refused
shawn@shawn-laptop:~$ nc -zv hack3r.com 993
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 993 (imaps) open
shawn@shawn-laptop:~$ nc -zv hack3r.com 995
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 995 (pop3s) open
shawn@shawn-laptop:~$ nc -zv hack3r.com 3306
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 3306 (mysql) : Connection refused
shawn@shawn-laptop:~$ nc -zv hack3r.com 8000
Warning: inverse host lookup failed for 209.40.203.73: Unknown host
hack3r.com [209.40.203.73] 8000 (?) : Connection refused