Didn't answer but they didn't leave a voicemail

Received call on March 15, 2017 at 7:27PM PDT.  Caller ID showed "Out of Area".  Didn't answer; no voicemail left. Blocked it.

Hang up call on my voicemail.  Probably SPAM.  White pages says it's scam or fraud:
http://www.whitepages.com/phone/1-206-458-7565

Had probably about 7-8 calls from this number in the past 2 weeks that even my phone identified as spam.  They never leave a voicemail.  I answered once, and it hung up on me after I said hello.  One other time, I talked to a person (or robot, not sure) asking me to participate in a survey to which I told them to put me on their do-not-call list.  I've still been getting the calls.

Don't ever answer these calls. If you do, they know it's a live # and they'll call you again and again. Google the number. If it doesn't identify a person or business you know of, block it immediately and be rid of them.