Need help!!!! my friend is on vacation and i dont know what?

Hey my friend is a vacation and he asked me to call him and also I'm really falling for this guy but he lives in india mumbia and I don't know what the calling code is for that so my phone calls will go thru and I don't want him to thnk I'm blowing him off and I have met him in person just to let you know but could you please tell me? I've been missing his calls and I can't. Call him back because of this and I hate it. So whoever helps me on this will get rated to ten thanks so much