lammert - 1:21 am on Apr 15, 2008 (gmt 0)

If you have a (virtual) dedicated server you will have access to Apache's httpd.conf. The first <VirtualDomain> section in your httpd.conf file is a catch all section. All requests to your server with domain names Apache cannot resolve to another VirtualDomain section are served by this first one. You could put a 301 RewriteRule here to redirect visitors to example.com/domain10.com.

Another way is that you put up a simple index.php in the DocumentRoot of this catch-all VirtualDomain and let this index.php display a parked page.