Who called from 4169004614

Got a call from 4169004614 , fax signal.
It displayed as hidden number, but I was able to get the phone number.

Got a call, twice within 15 minutes. My number is unpublished, and rarely receive any telemarketing calls.
Any help in finding out who this is would be greatly appreciated.

Calls me every morning at 5:00 am and all I hear are 2 beeps.

Calls my law office and does not leave a message.