Exhibit 32.1

                   CERTIFICATION OF PERIODIC FINANCIAL REPORTS


I, David W. Dorman,  Chairman of the Board and Chief  Executive  Officer of AT&T
Corp., certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)    the Quarterly Report on Form 10-Q for the quarterly period ended
       September 30, 2003 (the "Periodic Report") which this statement
       accompanies fully complies with the requirements of Section 13(a) or
       15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d))
       and

(2)    information contained in the Periodic Report fairly presents, in all
       material respects, the financial condition and results of operations of
       AT&T Corp.



Dated:  November 11, 2003

                                       /s/  David W. Dorman
                                       -------------------------
                                       By:  David W. Dorman