(d) reveal the identity of an individual who has provided personal data about another individual and the individual providing the personal data does not consent to the disclosure of his identity; or
“calling line identity” means the telephone number or information identifying the sender;
(d) if the telephone number from which the message is made is disclosed to the recipient (whether by calling line identity or otherwise), the content (if any) that can be obtained by calling that number,
(a) conceal or withhold from the recipient the calling line identity of the sender;
(b) perform any operation or issue any instruction in connection with the sending of the specified message for the purpose of, or that has the effect of, concealing or withholding from the recipient the calling line identity of the sender.
(d) all matters relating to the identity of persons furnishing information to the Commission,