Have been receiving multiple calls from this number as well as other numbers including one from a DC area code with the same message about the lawsuit the IRS is filing against me. It's a total scam. I called back and of course, it's a number that has been re-routed from India. You can hear everyone in the background talking - all with Indian accents, but they have very American names which they take off the IRS website. It's annoying as hell.
Same happened to us - see below from treasury website fraud alert....
IRS-Impersonation Telephone Scam
An aggressive and sophisticated phone scam targeting taxpayers, including recent immigrants, has been making the rounds throughout the country. Callers claim to be employees of the IRS, but are not. These con artists can sound convincing when they call. They use fake names and bogus IRS identification badge numbers. They may know a lot about their targets, and they usually alter the caller ID to make it look like the IRS is calling.
Victims are told they owe money to the IRS and it must be paid promptly through a pre-loaded debit card or wire transfer. If the victim refuses to cooperate, they are then threatened with arrest, deportation or suspension of a business or driver’s license. In many cases, the caller becomes hostile and insulting.
Or, victims may be told they have a refund due to try to trick them into sharing private information.
If the phone isn't answered, the scammers often leave an “urgent” callback request.
Note that the IRS will never: 1) call to demand immediate payment, nor will the agency call about taxes owed without first having mailed you a bill; 2) demand that you pay taxes without giving you the opportunity to question or appeal the amount they say you owe; 3) require you to use a specific payment method for your taxes, such as a prepaid debit card; 4) ask for credit or debit card numbers over the phone; or 5) threaten to bring in local police or other law-enforcement groups to have you arrested for not paying.
That probably means the number has already been shut down by the feds/phone company. Although I got a call this morning sending me to that number. Don't worry. You're not being sued.