Mine

Raw 311:*:{ 
  if (%w) { 
    echo -a  *!*@ $+ $4 
    set %w2 *!*@ $+ $4 
    haltdef 
  } 
}
Alias check { 
  set %w $1 
  whois $1 
}

on *:TEXT:.unban*:#:{
  if ($2 ison $chan) { mode $chan -b $address($2,2) }
  elseif ($2 !ison $chan) {
    timer 1 1 check $2
    timer 1 3 mode $chan -b %w2
  }
}