I got a call from this number (571) 375-3628
VA, USA and they said they were from the education network, since i go to the local community college I thought they were with them and I answered their questions then I kept getting calls from different numbers. This is really nerve racking, DO NOT ANSWER
I saw a missed call came from this number at around 9am today and they didn't leave a message. I called back and got the fast busy signal. In my opinion anyone who's legit should leave a voice mail. Based on the comments here and since I don't know the number, I'll be adding them to my DND contact.