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Cognomen Arach (Arach , Араш , Арах ) , around the globe, is quite a rare last name. The cognomen Arach is habitual in Uganda, where it is quite a rare surname, Morocco, where it is a rare surname, and Algeria. Not in comparison with a country's population, this name is the most popular in Uganda, Morocco, and India. Also, Arach is the forename as well as the last name.