The only reason our customers have issues hosting domains like .de and .nl domains is that the nameserver IP addresses we use are too similar. They are only different on the D class of the ip, which is not different enough for the registrar, so they do not let you apply your secondary nameserver.

What you can do to circumvent their policy is to get a dynamic DNS service like dyndns.org

So, yes, we can still host the .nl and .de domains, but you have to get a dynamic DNS service.