Thank you to all that submit this information. I, too got this call with no message. I never answer, but do save the numbers and check in here before blocking unknown callers.
Got two calls from this number. One at 1:05pm on 06/20/16 and one at 1:06pm on 06/20/16. They were just within a minute of each other. I didn't answer and they didn't leave a message. That's because they are Credit Card Scammers who are testing you're number to see if it's active. If they call you, DO NOT ANSWER. You will be put on a call back list of potential victims, even if you put yourself on a Don't Call Back List. Best thing you can do is ignore the call. Don't even let them reach you're voicemail.