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Family name Blocker (Blocker ) , across the world, is quite a common last name. The family name Blocker is habitual in the United States, where it is quite a rare surname, Myanmar, where it is a rare surname, and New Zealand. Not in comparison with a country's population, it is the most numerous in the United States, Myanmar, and Canada. Very seldom, Blocker is the forename as well as the last name.