According to this article even the phone companies are required to keep this a secret if a "letter" is given.http://blogs.abcnews.com/theblotter/2006/05/3501_americans_.html
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According to this article even the phone companies are required to keep this a secret if a "letter" is given.
http://blogs.abcnews.com/theblotter/2006/05/3501_americans_.html