+66-42-(000000...999999), Udon Thani, Nong Bua Lamphu, Nong Khai, Nakhon Phanom, Mukdahan, Sakon Nakhon and Loei, North-Eastern Region
Area Code +66-42-(000000...999999) located in Udon Thani, Nong Bua Lamphu, Nong Khai, Nakhon Phanom, Mukdahan, Sakon Nakhon and Loei, North-Eastern Region, more detail is as below.