Exhibit 21.1

List of Subsidiaries of AdTheorent Holding Company, Inc.:

Name	Jurisdiction of Incorporation/Formation
AdTheorent Holding Company, LLC	Delaware
GRNT Merger Sub 2 LLC	Delaware
AdTheorent Intermediate Holding Corporation	Delaware
AdTheorent Intermediate Holding Corporation	Delaware
AdTheorent Acquisition Corporation	Delaware
AdTheorent, Inc.	Delaware
AdTheorent Canada, Inc.	Nova Scotia
Symetry Holdings, LLC	Delaware
SymetryML, Inc.	Delaware