This number called.  I didn't answer.  They left no message.  Google comes up with several results indicating Menifee, CA.  I know no one there.  Verizon mobile will no longer allow blocking of more than a handful of numbers without paying them an extra fee monthly.  So now I don't answer any numbers not in my contact list.  If they don't leave a message, they are out of luck.  Verizon may soon be out of luck too, if they don't change this policy.

PS.  Thank you, 800notes for giving us a way to track these nuisance callers.

The same thing is happening to me as Elizabeth. The number has called twice in 2 days. No message, tried to call back but got nowhere.