An application for a residence order shall be made by a victim of domestic violence before a:

Under sections 12 and 19 of the Protection of Women from Domestic Violence Act, 2005, an aggrieved person applies for a residence order to the Magistrate, defined in section 2(i) as the Judicial Magistrate of the first class or Metropolitan Magistrate; so the answer is "Magistrate of the First Class". Section 26 lets such relief also be sought in a pending civil, family or criminal proceeding, but the Act does not make a Civil Judge, the Family Court or a mediation centre the forum for the application.