Avantax (AVTA) 10-Q 2002 Q3 Quarterly report

Exhibit 99.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Naveen Jain, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of InfoSpace, Inc. on Form 10-Q for the fiscal quarter ended September 30, 2002 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of InfoSpace, Inc.

Dated: November 14, 2002	By:	/s/    Naveen Jain
	Name:	Naveen Jain
	Title:	Chairman and Chief Executive Officer

I, Tammy D. Halstead, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of InfoSpace, Inc. on Form 10-Q for the fiscal quarter ended September 30, 2002 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of InfoSpace, Inc.

Dated: November 14, 2002	By:	/s/    Tammy D. Halstead
	Name:	Tammy D. Halstead
	Title:	Chief Financial Officer