Supposedly from the IRS telling me that I am being sued by the IRS and to call this number.  Of course I did not, as it is apparently a FRAUD call, trying to reel in people for Identity Theft.  IT was a robo call and not an actual person.  The IRS would never call you just announcing by some robo call they are suing you.  If there was a problem, the first thing you would have gotten is probably an audit letter and to call the local IRS office to set-up a meeting.  Just be forewarned.  I have never seen a phone prefix 168 on any phone numbers before.  I got this same robo call from a totally different number as well from an area code that is not even used.