[Boks]

I know how to ban a single IP from visiting my site, but I need to ban a range.

I've got:

<?php
if (eregi ("123\.123\.123\.[1-100]", $HTTP_SERVER_VARS["REMOTE_ADDR"]))
{
print "Banned";
       exit();
}?>

but that seems to ban 123.123.123.1-255.

Any ideas how to do it or what I'm doing wrong? I've searched google (that's where I found the above code) and some script sites, but didn't have much luck finding what I need.

Thanks for any help