; safe harbor (a) In general Section 227(b) of the Communications Act of 1934 ( 47 U.S.C. 227(b) ), as amended by section 2(b), is further amended by inserting after paragraph (3) the following: (4) Reassigned number database; safe harbor (A) Database required (i) Establishment The Commission shall establish a nationwide database of telephone numbers that have been reassigned in order to provide persons making calls subject to this subsection with the comprehensive and timely information that those persons need to avoid making calls without the prior express consent of the called party because of the reassignment of the number called to a different party. (ii) Current information The Commission shall ensure that information in the database required under clause (i) is up-to-date. (B) Provider participation required The Commission shall require each covered provider to report to the database required under subparagraph (A) the reassignment of any telephone number to or from a subscriber of the provider. (C) Safe harbor Beginning on the date of the establishment of the database required under subparagraph (A), in the case of a person who makes a call subject to this subsection to a telephone number that has been reassigned from a subscriber who had given prior express consent to be called by the person, the person shall not be found in violation of this subsection on the basis of not having the prior express consent of the called party to make the call, if the person shows that— (i) the person had the prior express consent of the subscriber and that consent had not been revoked as of the time of the call; (ii) the person queried the database before making the call, the query did not show the number as being reassigned from the subscriber, and the person made the call within a reasonable period of time (as defined by the Commission) after the query