How do know what PIN is if never got a notice

[DoninGA]

Go to this IRS website to retrieve the 6 digit Identity Protection PIN - https://www.irs.gov/identity-theft-fraud-scams/retrieve-your-ip-pin

[JohnB5677]

Here's how to find your IP PIN:

• Log in to the IRS Retrieve Your IP PIN page 
  • Select to view your PIN on your "Profile" page.
• If you have an IRS online account, 
  • Check your "Profile" section for the 6-digit number.
• You can call the IRS to have them reissue the notice,
  • (800) 829-1040
  • This can take up to 21 days
• If you opt into the IP PIN program, the IRS sends a new CP01A notice every December or January