Nev. Rev. Stat. § 207.165
2. Every telephone directory published and distributed after September 1, 1973, in this State which lists the telephone numbers of any telephone exchange located in this State shall contain a notice of the offense provided in NRS 207.163, as follows:
(b) The notice shall be preceded by the word “warning” printed in type which is at least as large as other type on the page,
except that telephone directories distributed solely for business purposes, commonly known as classified directories, need not contain such notice.
(Added to NRS by 1973, 718)