Where do I send 8453 ?

[HelenaC]

If you are filing your tax return using an online provider, mail Form 8453 to the IRS within 3 business days after you have received acknowledgement from your intermediate service provider and/or transmitter that the IRS has accepted your electronically filed tax return. If you don’t receive an acknowledgement, you must contact your intermediate service provider and/or transmitter. 

Mail Form 8453, U.S. Individual Income Tax Transmittal for an IRS e-file ...  to: 

Internal Revenue Service 

Attn: Shipping and Receiving, 0254 

Receipt and Control Branch 

Austin, TX 73344-0254