This is a safe call and not spam. It is a recording from a company called ShowingTime that schedules showings for homes that are for sale. It is not intended for general public and is aimed at Realtors who schedule an appointment to see a home that is for sale. It is meant for Real Estate Brokers only.
realtors spam calling
Real estate appointment scheduling service.
Showingtime, Tool used by real estate agents as confirmation of property showings