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In all the world, Blass (Blass , بلاس , 布拉斯 ) is a rare boy's first name. The first name Blass is characteristic of Nicaragua, where it is a rare largely male, but seldom female name, Bolivia, where it is a rare male name, and Tanzania. Measured by absolute frequency, it most frequently occurs in Tanzania, Mexico, and Bolivia. More prevalently, Blass is the last name as well as the forename.