Rang once, no message, and I'm assuming it is a robo-caller that has morphed into a new phone number because I add every one of these trash callers to my reject list.
This number has called my cell phone a few times over the past week or two. Never answered. They did leave a message once, but it was all dead air. If you have the autoblock feature on your phone, this seems to be a good number to use it on.