Exhibit 99.1





                                  CERTIFICATION
                       PURSUANT TO 18 U.S.C. SECTION 1350,
                      SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the Lexent Inc. (the "Company") Quarterly Report on
Form 10-Q for the period ending ended September 30, 2002 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, Kevin
O'Kane, Chief Executive Officer of the Company, certify pursuant to 18 U.S.C.
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of
2002, that, to the best of my knowledge:

        (1)     The Report fully complies with the requirements of Section 13(a)
                or 15(d) of the Securities Exchange Act of 1934, as amended; 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:   November 8, 2002                       By:/s/ Kevin O'Kane
        --------------------                  ------------------------------
                                                 Kevin O'Kane
                                                 Chief Executive Officer