Caller ID just said wireless caller.  Since the area code and next 3 digits are from the area I live in, I answered.  It was a recording about "time was running out" for me to buy the car warranty that they had contacted me about.  In the last 2 weeks I have received calls from 14 different numbers with the same area code and first 3 digits.  The caller ID usually either says unknown or wireless caller, but once said "azalea"!  I am suspicious that these were all from the same car warranty scammers.  They never leave a message on my machine, and today is the first time I answered one of the calls.