Last name 兰辛 (Lansing 
, 兰辛 
) , all around the world, is quite a rare family name. The cognomen 兰辛 is characteristic of the United States, where it is a rare surname, Malaysia, and Netherlands. Measured by absolute frequency, it is the most numerous in the United States, Germany, and Brazil. Very seldom, 兰辛 is the forename as well as the last name.