Who called from 4092918774

Many calls and no one answers . They call three times and leave no message  and continue to call.

I get back to back repeated calls from this number. when i answer they say nothing. I would like to know who this is calling or at least for them to say something when i answer.

This number is Lamar University located in Beaumont, Texas.

Thank you!  That makes sense - I asked them to call me.

How do you know this? And why would they call folks, out of state, at random?