Who called from 9012031197

The call showed up in the caller ID as Robocall.  But, I live in Memphis and 901 is a local area code, so I answered anyway, and it immediately disconnected after I said hello.  I suspect that this is to verify an active telephone number, and they'll sell my number to others for more spamming.  Darn.

Rings one and hangs up

I had two calls from  901 - 203 - 1197 on my cell last month and blocked it. I just received another call from this number, phone rang once then displayed as missed call..

Called at 1:30 in the afternoon.  Only rang twice.  No voicemail.

Half ring and stopped.