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EXHIBIT 21.1

  List of Subsidiaries of

Ziff Davis, Inc.

Ziff Davis, Inc.'s affiliates as of December 31, 2024, are listed below.

Name						State or Other Jurisdiction of Incorporation
2.4 Family Marketing Limited						United Kingdom
Aberdeen Market Intelligence France SAS						France
Spiceworks UK Ltd.						United Kingdom
Advanced Messaging Technologies, Inc.						Delaware, United States
Arthur L. Davis Publishing Agency, Inc.						Iowa, United States
BabyCenter, L.L.C.						Delaware, United States
Castle Connolly Medical Ltd						Delaware, United States
Cloak Holdings, LLC						Delaware, United States
Cell Rebel AB						Sweden
Cell Rebel Sociedad Limitada						Spain
CNET Media, Inc.						Delaware, United States
Demandshore Media Pvt. Ltd.						India
Demandshore Solutions Inc.						California, United States
Demandshore Solutions Pvt. Ltd.						India
Digital Foundry Network Limited						United Kingdom
DW Prime Holdings, Inc.						Delaware, United States
Ekahau Oy						Helsinki - Finland
Ekahau Inc.						Delaware, United States
Electric Mail (Ireland) Limited						Ireland
emedia Communications, LLC						California, United States
Everyday Health India Private Limited						India
Everyday Health Media, LLC						Delaware, United States
Everyday Health, Inc.						Delaware, United States
Excel Micro, LLC						Pennsylvania, United States
Families Online Limited						United Kingdom
FitNow, Inc.						Delaware, United States
Gamer Network Limited						United Kingdom
GlobalScholar Sub I LLC						Delaware, United States
GlobalScholar Sub II LLC						Delaware, United States
GMG Lifestyle Entertainment, Inc.						Delaware, United States
Hookshot Media Ltd						United Kingdom
Humble Bundle, Inc.						Delaware, United States
IGN Entertainment, Inc.						Delaware, United States
Inspired eLearning, LLC						Delaware, United States
IPVanish, Inc.						Florida, United States
J2 Cloud Co-Obligor, Inc.						Delaware, United States
j2 Global Australia Pty Ltd						Australia
J2 Global Canada, Inc.						Canada
J2 Global Denmark A/S						Denmark
j2 Global Ireland Limited						Ireland
J2 Global Sweden AB						Sweden
j2 Global Treasury Services Limited						Ireland

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J2 Global UK Limited						United Kingdom
J2 Global Ventures, Inc.						Delaware, United States
J2 Global Ventures, LLC						Delaware, United States
J2 Martech Corp.						Delaware, United States
J2 Web Services, Inc.						Delaware, United States
Know Ventures LLC						Delaware, United States
Lantern Technology, LLC						Florida, United States
Launch Gift Cards B.V.						Netherlands
Launch Gift Cards, Inc.						Delaware, United States
Launch Gift Cards Canada Limited						Canada
Launch Gift Cards K.K.						Japan
Launch Gift Card UK Ltd						United Kingdom
Launch Gift Cards NZ Ltd						New Zealand
Launch Gift Cards Pty Ltd						Australia
Lifecycle Marketing Group Ltd						United Kingdom
Lifecycle Marketing (Mother and Baby) Ltd						United Kingdom
Livedrive Internet Limited						United Kingdom
Logiva A/S						Denmark
Magic Lamp Technologies Limited						United Kingdom
Mashable, Inc.						Delaware, United States
MedPage Today, L.L.C.						New Jersey, United States
Mosaik Solutions, LLC						Tennessee, United States
Moz Holdings Canada Inc.						Canada - British Columbia
NCSG Holding AB						Sweden
Netprotect MX, S.A. de C.V.						Mexico
Netprotect VPN, LLC						Florida, United States
Netprotect, Inc.						Florida, United States
Netprotect, Ltd						Cyprus
Offers.com, LLC						Delaware, United States
OnTargetJobs, Inc.						Delaware, United States
Ookla Middle East						United Arab Emirates
Ookla, LLC						Washington, United States
Out There Gaming Limited						United Kingdom
Overplay, Inc.						Florida, United States
Prime Education, LLC						Florida, United States
Prime Implementation Science Mobilized, LLC						Delaware, United States
Red Ventures Interactive Limited						United Kingdom
Red Ventures Interactive Pty Ltd						Australia
RetailMeNot India Private Limited						India
RetailMeNot Limited						United Kingdom
RetailMeNot UK Limited						United Kingdom
RetailMeNot, Inc.						Delaware, United States
Revenu8 Inc.						California, United States
Root Wireless, Inc.						Washington, United States

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Secured Connectivity, LLC						Florida, United States
SEOmoz Holdings Ireland Ltd						Ireland
SEOmoz, Inc.						Delaware, United States
Serinus42 B.V.						Netherlands
SpatialBuzz Limited						United Kingdom
Spiceworks IT Solutions India Pvt. Ltd.						India
Spiceworks, Inc.						Delaware, United States
Strong Technology, LLC						Florida, United States
TCI Acquisition, Inc.						Delaware, United States
TDS Cards, Inc.						Delaware, United States
TDS Holdco, Inc.						Delaware, United States
TDS Intermediate Holdco, Inc.						Delaware, United States
The Aberdeen Group, LLC						Delaware, United States
The Big Willow, Inc.						Delaware, United States
The Communicator Corporation Limited						United Kingdom
The Electric Mail Company						Canada - Nova Scotia entity registered in BC
ThreatTrack Security Holdings, Inc.						Delaware, United States
VIPRE Security Group Philippines, Inc.						Philippines
VIPRE Security Group, Inc						Florida, United States
Timeshift, Inc.						Delaware, United States
UU, Inc.						Barbados
VIPRE Security Limited						United Kingdom
VIPRE SG India Private Limited						India
VIPRE AS						Norway
YSL Ventures, Inc.						Delaware, United States
ZD Cybersecurity Netherlands B.V.						Netherlands
ZD Singapore Pte. Ltd.						Republic of Singapore
Ziff Davis Australia Pty Ltd						Australia
Ziff Davis B2B Focus, Inc.						Delaware, United States
Ziff Davis Canada, Inc.						Canada
Ziff Davis Deutschland GmbH						Germany
Ziff Davis International, Ltd.						United Kingdom
Ziff Davis Ireland Limited						Ireland
Ziff Davis Performance Marketing Private Limited						India
Ziff Davis Performance Marketing, Inc.						Delaware, United States
Ziff Davis Performance Marketing, Inc.						Philippines
Ziff Davis Procurement, LLC						Delaware, United States
Ziff Davis, LLC						Delaware, United States