N.Y. New York City Civil Court Law § 403

§ 403. Summons; method and place of service. Service of summons shall\nbe made in the manner prescribed in supreme court practice, including\nthe optional method of service by mail authorized by CPLR 312-a, but it\nshall be made only within the city of New York unless service beyond the\ncity be authorized by this act or by such other provision of law, other\nthan the CPLR, as expressly applies to courts of limited jurisdiction or\nto all courts of the state.\n