N.Y. Uniform City Court Act Law § 403

§ 403. Summons; method and place of service.\n Service of summons shall be made in the manner prescribed in supreme\ncourt practice, including the optional method of service by mail\nauthorized by CPLR 312-a, but it shall be made only within the county\nunless service beyond the county be authorized by law in this act or\nelsewhere.\n