Exhibit 32.1

                            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 Report of Exterra Energy Inc. (the "Company") on Form
10-Q for the period ended August 31, 2008, as filed with the Securities and
Exchange Commission on the date hereof (the "Report"), I, John Punzo, 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:

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

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


/s/ John Punzo
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John Punzo
Chief Executive Officer
October 14, 2008