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                                                                    Exhibit 32.2

   CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

         In connection with the Annual Report on Form 10-K of Ascential Software
Corporation (the "Company") for the period ended December 31, 2003 as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), the
undersigned, Robert C. McBride, Chief Financial Officer of the Company, hereby
certifies, pursuant to 18 U.S.C. Section 1350, to the best of his knowledge and
belief, that:

         (1)      the Report fully complies with the requirements of Section
                  13(a) or 15(d) of the Securities Exchange Act of 1934; and

         (2)      the information contained in the Report fairly presents, in
                  all material respects, the financial condition and results of
                  operations of the Company.

Date: March 15, 2004                    /s/ Robert C. McBride
                                        -----------------------
                                        Robert C. McBride
                                        Chief Financial Officer