Got a call from this number twice today and in the second call they left a robotic message saying it's from the IRS and to call back to that number. It sounds just like the one I got from this other number, 520-220-0761, which is a scam!

I am an CPA and never heard that IRS calls the taxpayers for the lawsuits. I received this call today and knew it is a scam.

Got the same scam call.  Reverse lookup shows its an empty lot in farm area in Stockton, Ca. so they are probably spoofing the number

the IRS is filing a lawsuit against you

Same as everyone else said IRS Lawsuit