phone numbers and email only visible for members

[TimesOut]

hi
i am looking for plug-in which make phone numbers consists of 8 digits not visible for guest. only for members in the post.
it will show message line for guest instead like " please register to view the contact number"

there is a similar plugin for website links not visible for guest. but i didnt know how to modify it.

any help plzz.?
thanks