Check

Displays detailed information about a user.

check <nick>

Example:

check Ollie

Information for user Ollie

          Nick:: Ollie (ABACZ)
     Signed on:: Wed Sep 27 16:58:50 2006
     Timestamp:: Wed Sep 27 16:28:05 2006 (1159370885)
 User/Hostmask:: f@ke (127.0.0.1)
Real User/Host:: Ollie@localhost
     Real Name:: Ollie
        Status:: IRC Operator
  Connected to:: irc.server.org
      Umode(s):: +oiwgh f@ke
    Channel(s):: #moo 

         Ports:: 3787 -> 6667 (client -> server)

Note that you can use this command only if you are opered up.

See Also

Take a look at Raws related to /check to get more information about them.