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Cognomen Janpirak (Janpirak ) , worldwide, is a very rare last name. The surname Janpirak is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
จันทร์ภิรักษ์
Bunda, Chitta, Wanpen, Phairot, Nantana, Nantida, Waravut, Ponganan, Duangjai, Puttipong, Duangkhae, Thuncharit, and Trakarnporn