N.Y. CPLR 306-B
Service of the summons and complaint, summons with notice, third-party summons and complaint, or petition with a notice of petition or order to show cause shall be made within one hundred twenty days after the commencement of the action or proceeding, provided that in an action or proceeding, except a proceeding commenced under the election law, where the applicable statute of limitations is four months or less, service shall be made not later than fifteen days after the date on which the applicable statute of limitations expires. If service is not made upon a defendant within the time provided in this section, the court, upon motion, shall dismiss the action without prejudice as to that defendant, or upon good cause shown or in the interest of justice, extend the time for service.
N.Y. CPLR 306-B