Who called from 6472478954

I received a Phone call from this number. I answered but all i could hear was silence. I live in New Zealand and have no contacts or know any body from this place and I am wondering how they got my number. I guess its a spam but still makes me feel uncomfortable knowing someone from the other side of the world got my number and actually made the effort to ring me. spooky!

I just received a call from the same number in the US. I didn't answer and blocked it. Live in New Zealand too.

I got a call from this no. On my mobile, came up Ontario Canada....I didn't answer it as I know no one from Canada!! I'm located in Australia!!