D THE WORDS "2017 FORM 4868" ON YOUR CHECK. MAIL AS SOON AS POSSIBLE TO: INTERNAL REVENUE SERVICE CENTER P.O. BOX 37009 HARTFORD, CT 06176-7009 Siglit 06-15.1T ♦ DETACH HERE • Fe,. 4868 Dapartmonfolth? Ineaboy Iniunal Ficyno Sqrvico t991 Application for Automatic Extension of Time To File U.S