I've been seeing this number on my cell phone call id so I decided to answer this time.. The recording says to hold for free listing on google..so when the guy came on, he was verifying my company name, then when I started asking questions what company he is with, etc...he hung up.
Did not recognize the number so didn't answer. They left no voice message of any kind, which leads me to believe that they are most likely a robo call like the previous posters.
If DD is correct in that they hung up when asked who they were I would say that this is a particularly dangerous type of caller. I would not recommend giving them any information at all.
I have received numerous calls from this number. I verified the ownership the first time without providing "pertinent" information. However, this time I asked first off, who he was with. He replied with MY COMPANY NAME!!! I said "No you're not." and he hung up immediately.