Who called from 7402058712

I got a call from this # I answered it but no one was on the line

Got several calls never leave message

I keep getting calls too but your right .they never leave a message ...

I get several a day, but no messages!

Calls 4 or 5 times a week,no one there.I am starting to think theses calls are bots seeing if your home,seeing if you will answer.I get about 10 a day,usually from a cell phone,no caller i.d. info,no ever answers a return call,come from all over the u.s....There robot calls