Don't know. Called, hung up and did not leave a message. Phone indicated it was from Toledo Ohio. Received more calls later that day, one from 877-224-9828, the next from 419-324-0230 and the last from 314-627-5523. These all seem to be spam calls. I called the last one back, which gave me a recording from some school, giving me the option to opt out of their calling list, which I did. I hope that wasn't a mistake!