CHOICE ONE COMMUNICATIONS INC
EXHIBIT99
<DOCUMENT>
<TYPE>EX-10
<SEQUENCE>4
<FILENAME>exhibit99.txt
<DESCRIPTION>EXHIBIT99
<TEXT>
EXHIBIT 99.1

     CERTIFICATION 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 quarterly report of Choice One Communications Inc. (the
"Company") on Form 10-Q (the "Report") for the period ended June 30, 2002 as
filed with the Securities and Exchange Commission on the date hereof, I, Steve
M. Dubnik, 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; and
(2)  The information contained in the Report fairly presents, in all material
     respects, the financial condition and results of operations of the Company.

/s/ Steve M. Dubnik
-----------------------
Steve M. Dubnik
Chief Executive Officer
August 14, 2002


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