; provided, however, that it may engage in the activities set forth in clause (i)(III), (IV), and (V). (6) Requirements for significant nonblanket licensees (A) In general (i) Notice of activity Not later than 45 days after the license availability date, or 45 days after the end of the first full calendar month in which an entity initially qualifies as a significant nonblanket licensee as defined in subsection (e)(29), whichever occurs later, a significant nonblanket licensee shall submit a notice of nonblanket activity to the mechanical licensing collective. The notice of nonblanket activity shall comply in form and substance with requirements that the Register of Copyrights shall establish by regulation, and a copy shall be made available to the digital licensee coordinator. (ii) Reporting and payment obligations The notice of nonblanket activity submitted to the mechanical licensing collective shall be accompanied by a report of usage that contains the information described in paragraph (4)(A)(ii), as well as payment of the administrative assessment as required under this subsection and applicable regulations. Thereafter, subject to clause (iii), a significant nonblanket licensee shall continue to provide monthly reports of usage, accompanied by payment of the administrative assessment, to the mechanical licensing collective, such reports and payments to be submitted not later than 45 days after the end of the calendar month being reported. (iii) Discontinuation of obligations An entity that has submitted a notice of nonblanket activity to the mechanical licensing collective that has ceased to qualify as a significant nonblanket licensee may so notify the collective in writing. In such case, as of the calendar month in which such notice is provided, such entity shall no longer be required to provide reports of usage or pay the administrative assessment