[redhead]

Or perhaps like this:

PHP Code:

<?php

if (eregi("123.123.([0-9]$|[0-9]{2}$|255$).([0-9]$|[0-9]{2}$|255$)",
            ip2long($HTTP_SERVER_VARS["REMOTE_ADDR"])))
{
  print "Banned";
  exit();
}
else
{
  print "passed";
}
?>