In answer to your question earlier, I have a PHONE TRAY PRO. I love it. I don't know what I'd do without it. As i said, there are many good ones on the market. Panasonic has a phone that can block numbers It's very good too. But Phone Tray Pro is the best in my opinion. For example, if you're sitting at your computer and the phone rings and it's a suspicious number (a new one all of a sudden that you are totally unfamiliar with), you can click on their block-call-now icon, then go and look it up on this website, and depending on what you find, either leave it blocked or unblock it. I love that feature. The message the caller will hear is a pre-selected one of your choice. I use either the fast busy tone that makes it sound like your number is out of order, or the message: "The number you have called is not in service. Please make sure you have the right number and have dialed it correctly." You will be very pleased with the help! It's not 100% because these scammers are always trying to reinvent themselves with new numbers, but it's a great help..