Post Office: SARWAKAIPost Office Type: SUB OFFICE Delivery Office Status: Delivery Post OfficeDistrict: TankPin/Post Code:29510Region: North West FrontierContact Address: Postmaster, Post Office SARWAKAI (Sub Office), Tank Pakistan, Pincode:- 29510Postal Dist:- TankPostal Region:- North West FrontierPostal Circle:- North West Frontier