Exhibit 32.2

      CERTIFICATION OF CORPORATE CONTROLLER AND PRINCIPAL FINANCIAL OFFICER
                         PURSUANT TO 18 U.S.C. ss. 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In  connection  with  the  Quarterly Report of ATSI Communications, Inc. on Form
10-Q  for  the  period  ending  April 30, 2004, as filed with the Securities and
Exchange Commission on the date hereof, I, Antonio Estrada, Corporate Controller
and  Principal  Financial Officer of the Company, certify, pursuant to 18 U.S.C,
ss.  1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,

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

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

By /s/ Antonio Estrada
Antonio Estrada
Corporate Controller and
Principal Financial Officer
June 14, 2004