help/opers/masktrace

   1 MASKTRACE [<nick>!]<user>@<host> :<gecos>
   2
   3 Outputs a list of local users matching the given masks
   4 in ETRACE format, with the classname replaced by
   5 the server the users are on. Gecos uses the same
   6 wildcards as xlines; nick, user and host use just
   7 ? and *.
   8
   9 Supports using CIDR ip masks as a hostname.