I received a call from this number at 11:23 AM today.  I couldn't get to the phone in time to answer it.  Although no caller ID was displayed, I called the number back withing five minutes because I am expecting an important call.  To my surprise, I got an automated Verizon message that said the number had been changed, disconnected, or is no longer in service.  I had not dialed the number, but had called back through the call-back feature on my cell phone, so there was no possibility that I had dialed incorrectly.  I hit the call-back button again and got the same message.