; 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 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 such 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. The Commission shall ensure that information in the database required by this subparagraph is up-to-date. (B) Provider participation required The Commission shall require each covered provider to report to the database required by subparagraph (A) the reassignment of any telephone number to or from a subscriber of such provider. (C) Safe harbor Beginning on the date of the establishment of the database required by 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 such person, such 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 such call, if such person shows that— (i) such person had the prior express consent of such subscriber and such consent had not been revoked as of the time of such call; (ii) such person queried such database before making such call, the query did not show such number as being reassigned from such subscriber, and such person made such call within a reasonable period of time (as defined by the Commission) after such query; (iii) such query did not show such number as being reassigned from such subscriber as a result of an inaccuracy on the part of— (I) the Commission or other entity administering such database