Who called from 2027472775

I get a call and it is just dead air. Tied calling back and it sd You have reached united service Organization outbound calls only no inbounds are exepter

I received a call from this number and it was from my friend in the Army who is stationed in Kuwait.

I believe he was using Skype to call.

You are correct if you are getting this call answer it is a service person you know calling from Iraq, Kuwait, Afghanistan etc...