Called and hung up without saying a word. I think they are part of a growing scam that just serves to verify your number when you answer. Verizon caller ID already identified them as "potential scam" like all the others, worth installing.
I just got a call from this number. I let it go to voicemail, and of course the caller did not leave a message. Judging from the comments left by the rest of you, I think someone is making SPAM calls from (919) 630-1697.