Who called from 3126752347

These guys called at midnight and woke us up.  I didn't answer, but when I try to call the number back I just hear beeps.

Recieved a call from this number at 3:00 am and when I answered no one said anything and it is rolling straight to a voicemail

Someone from 312-675-2347 keeps calling me at 4 am and said that they are trying to verify if my mobile number is a working number. The woman with an accent said this in a very mocking tone.

Somebody keeps calling me at 4 am from the above #.

The same thing happened to me. i have a missed call from this # on my work phone at midnight last night.