Ancestry.com 10-Q 2011 Q2 Quarterly report

EXHIBIT 32.1

CERTIFICATIONS OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Timothy Sullivan, 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 on Form 10-Q of Ancestry.com Inc. for the quarter ended June 30, 2011 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 report fairly presents, in all material respects, the financial condition and results of operations of Ancestry.com Inc.

Dated: August 2, 2011

By:	/s/ Timothy Sullivan
	Timothy Sullivan
	Chief Executive Officer

I, Howard Hochhauser, 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 on Form 10-Q of Ancestry.com Inc. for the quarter ended June 30, 2011 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 report fairly presents, in all material respects, the financial condition and results of operations of Ancestry.com Inc.

Dated: August 2, 2011

By:	/s/ Howard Hochhauser
	Howard Hochhauser
	Chief Financial Officer