The caller ID said "FISERV CHECKFRE" so I looked it up and apparently it belongs to this company, Fiserv.
A YouMail subscriber reported as spam and says...
8/26/16 7:51 AM
I have recieved 80-100+ calls a day from "Unknown Caller" for months that is automated message or leaves a voicemail that reports "zero zero zero..." for about 40 seconds. Just today the call has shown the ID and left the exact same message.
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