The IRS would have any necessary information on you. Also, they would first contact you with a letter. My daughter received a call similar to this several years ago -- she called the number back and the first thing they asked for was her SSN. She hung up and then called her local IRS office. Of course, they had no record of any actions against her.
there is a law suit against me and i need all identifying information...I asked what the law suit is about..could not give me an answer...when i said this is bull***it he got threatening and said swear all you want I am recording you..at that point i hung up
I received a call from this number and did not answer the phone. A woman left a message and basically said "you or your appointed attorney need to call right away to get this matter straightened out. You should not ignore this call. This is an important call. Have a very nice day." Rather ridicules. Did not say who she was, who she was calling for, etc. Didn't sound real. I am so sick of these calls!
I decided to call the call back number for fun (it's a slow day). A guy with a thick foreign accent (trust me I know, I'm foreign) claimed to be named Allen Parker. He asked me which phone number I was called at so I gave him his own phone number back. Twice. I told him I wanted to pay the fine. At this point he got frustrated and, I'm not making this part up, had the cajones to say "F you motherf'r you can leave it in your moms (such and such) and I will get it from there". Wow. As a younger "foreigner" it was interesting to hear this adult talk like this with such a thick accent.