After you file

Not sure just what you are asking.

 

Which IRS address?    If you e-filed then  it was not sent to any IRS address - it simply was entered into the IRS e-file system.

 

If you paper filed then it was sent to the address that you addressed to.

**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**