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Cognomen Arostegui (Arostegui ) , in the world, is quite a common last name. The surname Arostegui is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is quite a common surname, Peru, where it is quite a rare surname, and Uruguay. Not in comparison with a country's population, it most frequently occurs in Latin America and the Caribbean, particularly Nicaragua, Peru, and Argentina. Much less frequently, Arostegui is the forename as well as the last name.