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Last name Janpratak (Janpratak ) , in the world, is a very rare family name. The surname Janpratak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Janpratak | Thailand |
Boontita, Thanawat, Naphassorn, Suthasinee, and Nuttawadee