The number I received a call from actually had one less zero at the end (i.e., the nine-digit number 979-600-000).  Perhaps this is an attempt to avoid being blocked via the phone company.  The caller ID read "EAGLE LAKE TX".  No message was left on my answering machine.  I notice that calls with the same ID have been reported in this forum from at least one other number in the 979 area code.