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Surname Duber (Duber , דוב , דובער ) , all over the world, is quite a rare family name. The last name Duber is characteristic of Israel, where it is quite a rare surname, Poland, where it is a rare surname, and Colombia. Measured by absolute frequency, it is the most numerous in India, Colombia, and Poland. More prevalently, Duber is the forename as well as the last name.