You can check if the number and see if it belongs to a reputable company, or if they are robocalls, or scams. I use it daily since I don't answer for numbers I don't recognize. Most of the time they are either scams or robocalls, but at least one time I found out that the number belonged to VISA fraud protection, and I called them back right away, and indeed my Credit Card had been compromised. So, I can decide to block the caller, and then wait for the next one to pop-up, but at least I am able to look here and make an informed decision to do so.
I have gotten a few calls from this number i have magic jack home phone system and i forward my phone to my cell when i am not at home and i have received a bunch of these numbers and then when i call back no one picks up its busy let me catch them calling me i will cuss them out