When I visited joomlak.co.cc, I have seen the page : http://staff.x10hosting.com/default.web.page/
I think it did exactly the DNS request. But still error.
After flush DNS cache, still nothing changed.
Config DNS
Main domain
-> Server Error ( http://staff.x10hosting.com/default.web.page/ )
There has been a server error. Please try again momentarily.
If the issue persists, create a support ticket.