EX-21.1 4 zd20221231ex-211.htm EX-21.1
EXHIBIT 21.1
List of Subsidiaries of
Ziff Davis, Inc.
Ziff Davis, Inc.'s principal affiliates as of December 31, 2022, are listed below. All other affiliates, if considered in the aggregate as a single affiliate, would not constitute a significant subsidiary.

Name |  | State or Other Jurisdiction of Incorporation
Ziff Davis, LLC |  | Delaware, United States
Everyday Health, Inc. |  | Delaware, United States
Everyday Health Media, LLC |  | Delaware, United States
J2 Global Ventures, LLC |  | Delaware, United States
J2 Martech Corp. |  | Delaware, United States
J2 Web Services, Inc. |  | Delaware, United States
RetailMeNot, Inc. |  | Delaware, United States
Humble Bundle, Inc. |  | Delaware, United States
FitNow, Inc. |  | Delaware, United States
IGN Entertainment, Inc. |  | Delaware, United States
Ekahau, Inc. |  | Delaware, United States
SEOMoz, Inc |  | Delaware, United States
OnTargetJobs, Inc. |  | Delaware, United States
ThreatTrack Security Holdings, Inc. |  | Delaware, United States
BabyCenter, L.L.C. |  | Delaware, United States
Spiceworks, Inc. |  | Delaware, United States
Mashable, Inc. |  | Delaware, United States
Offers.com, LLC |  | Delaware, United States
Ookla, LLC |  | Washington, United States
Root Wireless, Inc. |  | Washington, United States
ExcelMicro, LLC |  | Pennsylvania, United States
NetProtect, Inc. |  | Florida, United States
Mudhook Marketing, Inc. |  | Florida, United States
Prime Education, LLC |  | Florida, United States
j2 Global Ireland Limited |  | Ireland
Electric Mail (Ireland) Limited |  | Ireland
J2 Global UK Limited |  | United Kingdom
Livedrive Internet Limited |  | United Kingdom
Ziff Davis International, Ltd. |  | United Kingdom
Lifecycle Marketing (Mother and Baby) Ltd |  | United Kingdom
j2 Global Canada, Inc. |  | Canada
Ekahau Oy |  | Finland