It's the San Bernardino County Coroner/Public Administrator. I called them first and were returning my call, didn't answer because I didn't recognize the number.
I called SB County regarding an old news story where a missing person was found sadly deceased. I got my answers from some genealogists using their paid sources. Other than that I've had no dealings with SB County.
They left me a voice mail and it was a legit call, but the number to call back to is totally different. It's was San Bernardion County Parks returning my call.