Please help me out!!!!!!!!!!!!!!!!!!!!!!!!!?

my dad is gone to china yesterday,he has not given any number for us so that we can contact him,yesterday when we called him at his cell number which is his own,he was at china's airport,now he's been gone to bangkok,and since then we are not able to contact him,on his own number even.could you plz help me if there is any telephonic code of china/bangkok,so that we will be able to contact him.