Since I cannot eFILE Form 966 what is the address to mail it to for a UTAH LLC operating in NEW HAMPSHIRE?

[DoninGA]

File Form 966 with the Internal Revenue Service Center at the address where the corporation (or cooperative) files its income tax return.

Go to this IRS website for mailing addresses - https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment

[Rick19744]

I would add that you should send this form certified mail return receipt requested.