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Cognomen לאופר (Laufer
, Lauper
, Laupper
) , in all the world, is a common surname. The cognomen לאופר is habitual in Aland Islands, where it is quite a common surname, Switzerland, and Israel. Measured by absolute frequency, the name is most common in Germany, the United States, and Switzerland. Much less frequently, לאופר is the forename as well as the last name.