This number leaves an automated message with the number and ,"This is an urgent call from the IRS. Please call back immediately"
Pretty sure this is the Facebook scam everyone's been talking about.
Just got a call from this number with a recording to call IRS back. I called the number back and told the person on the other end to remove my number from their list as I had received several calls from them. The man asked if I was sure that it was the same number. I then just told him not to call again.