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Last name 関 (Seki , 関 , Кан ) , around the globe, is a common family name. The family name 関 is habitual in Kyrgyzstan, where it is quite a common surname, Azerbaijan, where it is quite a rare surname, and Uzbekistan. Measured by absolute frequency, the name is most common in China, Turkey, and Nigeria. Also, 関 is the forename as well as the last name.