Oops! You must spread some Reputation around before giving it to JudyKayTee again.
I still don't understand why you can't just call him. I doubt his mother thinks he's there on vacation!
My thoughts exactly.
I'm a bit ticked about this. The OP originally came here acting like she had no clue where he could be, had no idea where he is. But she's admitted that she believes that he's at his mother's house, that the last time she talked to him (which wasn't long ago) that's where he was. So why are we being asked to find him? She knows where he is.
To the OP (original poster) this is something you have to figure out. We can't help you. Either you want to contact him, or you don't. If you do, you have the number, you know where he is, so contact him. Your choice, but you're the one that has to make it, not us.
Good luck