We got a call from this number today at 2:18 pm and didn't answer. The caller ID was UNKNOWN NAME. No voice mail message was left. When I called back (our number is hidden by default on outgoing calls), a recording answered. It sounded like a female synthesized voice of low quality. Some robo calls sound almost human. This automated answer did not. The number will be added to our call blocker.
Called and left no message, so I blocked all future calls. Came up on Caller ID as S Yarmouth MA which is up on Cape Cod, but I seriously doubt that this call really originated there.