Reg (Persian: رگ, also Romanized as Rek; also known as Rak, Riqq, and Rīqqah)[1] is a village in Qaleh Zari Rural District, Jolgeh-e Mazhan District, Khusf County, South Khorasan Province, Iran.

As of the 2006 census, its population was 23 in 13 families.

[2] This Khusf County location article is a stub.

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