KN number
The KN number is the designation used by the United States for describing North Korean missiles.
Description
The "KN" stands for "Korea, North", which is the reverse form of "North Korea". It is used by United States military for designating North Korean missiles.The number following "KN" represents the order of the missile learned about by South Korea and the United States. For example, "KN-24" is the 24th North Korean missile recognized by South Korea and the U.S. militaries.