N.Y. Comp. Codes R. & Regs. tit. 11, § 27.7
(a) The excess line association shall submit the following:
(b) The reports required by this section shall be submitted, in a format and utilizing such written or electronic media as prescribed by or satisfactory to the superintendent, to:
New York State Department of Financial Services
Property Bureau
Attention: Excess Line Unit
One State Street
New York, NY 10004