Exhibit 21.1

MATERIAL SUBSIDIARIES OF AQUANTIVE, INC.

November 19, 2004

Name of Subsidiary	Jurisdiction of Incorporation
Atlas DMT LLC	New York
Avenue A LLC	New York
aQuantive Paymaster, LLC	New York
Drive Performance Media LLC	New York
TechnologyBrokers Ltd.	United Kingdom
MediaBrokers Ltd.	United Kingdom
NetConversions, Inc.	Delaware
i-FRONTIER, Inc.	Pennsylvania
Avenue A/Razorfish Search, LLC (formerly eonMedia, LLC)	Colorado
Atlas OnePoint, LLC (formerly Go Toast, LLC)	Colorado
Atlas Australia Ltd.	Australia
Avenue A/Razorfish, Inc. (formerly SBI Group, Inc.)	Utah