165.1. A dealer or any other person holding the securities of a reporting issuer on behalf of clients is required to provide the issuer with a list of the names and addresses of those clients, where the issuer so requests in order to discharge its obligation to send documents to those clients, and to specify the number of securities held by each client and the preferred language of correspondence, except where a client has given written instructions that such information is not to be disclosed to the issuer.