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Last name Koop (Koop
, 库普
, كوب
) , globally, is a common cognomen. The cognomen Koop is characteristic of Estonia, where it is quite a common surname, Paraguay, where it is quite a rare surname, and Netherlands. In absolute terms, it is commonest in Germany, the United States, and Netherlands. Very seldom, Koop is the forename as well as the last name.