Just leave the phone number field blank and press on. Not even a space. The IRS will never call you on the phone anyway. Even if you are in the U.S. To this day I don't understand and can't comprehend why the IRS has a space on the form for your phone number. They will never call you. The IRS always deals with tax issues with a tax filer by mail so that they have it in hard copy writing should the need arise to prove anything in a federal court.
