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EX-21.1 5 zd20241231ex-211.htm EX-21.1 ZIFF DAVIS, INC - List of subsidiaries of Ziff Davis, Inc.

EXHIBIT 21.1

  List of Subsidiaries of
Ziff Davis, Inc.

Ziff Davis, Inc.'s affiliates as of December 31, 2024, are listed below.
NameState or Other Jurisdiction of Incorporation
2.4 Family Marketing LimitedUnited 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 LtdDelaware, United States
Cloak Holdings, LLCDelaware, United States
Cell Rebel ABSweden
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 LimitedUnited Kingdom
DW Prime Holdings, Inc.Delaware, United States
Ekahau OyHelsinki - Finland
Ekahau Inc.Delaware, United States
Electric Mail (Ireland) Limited Ireland
emedia Communications, LLCCalifornia, United States
Everyday Health India Private LimitedIndia
Everyday Health Media, LLCDelaware, United States
Everyday Health, Inc.Delaware, United States
Excel Micro, LLCPennsylvania, United States
Families Online LimitedUnited Kingdom
FitNow, Inc. Delaware, United States
Gamer Network LimitedUnited Kingdom
GlobalScholar Sub I LLCDelaware, United States
GlobalScholar Sub II LLCDelaware, United States
GMG Lifestyle Entertainment, Inc.Delaware, United States
Hookshot Media LtdUnited Kingdom
Humble Bundle, Inc.Delaware, United States
IGN Entertainment, Inc.Delaware, United States
Inspired eLearning, LLCDelaware, United States
IPVanish, Inc. Florida, United States
J2 Cloud Co-Obligor, Inc.Delaware, United States
j2 Global Australia Pty LtdAustralia
J2 Global Canada, Inc.Canada
J2 Global Denmark A/SDenmark
j2 Global Ireland Limited Ireland
J2 Global Sweden AB Sweden
j2 Global Treasury Services LimitedIreland


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


Secured Connectivity, LLCFlorida, United States
SEOmoz Holdings Ireland LtdIreland
SEOmoz, Inc.Delaware, United States
Serinus42 B.V.Netherlands
SpatialBuzz LimitedUnited Kingdom
Spiceworks IT Solutions India Pvt. Ltd.India
Spiceworks, Inc.Delaware, United States
Strong Technology, LLCFlorida, 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, LLCDelaware, United States
The Big Willow, Inc.Delaware, United States
The Communicator Corporation LimitedUnited Kingdom
The Electric Mail CompanyCanada - 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 LimitedIndia
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 LtdAustralia
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 LimitedIreland
Ziff Davis Performance Marketing Private Limited India
Ziff Davis Performance Marketing, Inc. Delaware, United States
Ziff Davis Performance Marketing, Inc.Philippines
Ziff Davis Procurement, LLCDelaware, United States
Ziff Davis, LLCDelaware, United States