There is supposed to always be a way for administrators to be contacted directly, with this case I mentioned I was able to send one of the admins a direct e-mail today maybe they will write back.
Depending on the type of domain it may be required that valid contact information is publicly listed, as I discovered this by surprise with my .US domain all of a sudden lot of phone calls from India. For .COM it is not required, but for other countries it may be.
This would be a problem for regulators to not be able to contact administrators if there is any kind of a legal problem with a site.