EXHIBIT 21
ACNIELSEN CORPORATION
LIST OF SUBSIDIARIES - 1/31/00
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State or % Ownership
Name Country of 100% Except
Incorporation as Noted
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A. C. NIELSEN COMPANY Delaware
A. C. Nielsen Ges.mbH Austria
ACNielsen Piackutato Kft. Hungary
A. C. Nielsen Company (Belgium) S.A. Belgium
A. C. Nielsen Company & Co. S.A. Belgium
SRG Research Canada Ltd. Canada
D.J. Calhoun Marketing & Development Ltd. Canada 86.0
Recherches en Marketing (Quebec) Inc. Canada
ACNielsen Chile Limitada Chile
ACNielsen Chile S.A. Chile 51.0
A. C. Nielsen de Colombia S.A. Colombia
ACNielsen Cyprus Limited Cyprus
Amer Nielsen Research Belarus
ACNielsen Bulgaria Limited Bulgaria
ANR Istrazivanje Trzista Croatia
ACNielsen Eesti OU Estonia
ACNielsen Ghana, Limited Ghana
ACNielsen Kazakhstan Kazakhstan
ACNielsen Kenya Limited Kenya
ACNielsen Latvia SIA Latvia
UAB ACNielsen Baltics Lithuania
ACNielsen Limited SRL Moldova
ACNielsen Nigeria Limited Nigeria
ZAO ACNielsen Russia
ACNielsen Slovakia s.r.o. Slovakia
ACNielsen raziskovalna druzba, d.o.o. Slovenia
ACNielsen Uganda Limited Uganda
ACNielsen Ukraine CJSC Ukraine
ACNielsen AIM A/S Denmark
Teollisuuden Tielopalvelu Industrial Intelligence Ltd. Oy Finland
A. C. Nielsen Finland Oy Finland
Finnpanel Oy Finland 50.0
A. C. Nielsen S.A. France
ACNielsen EDI, S.A.R.L. France
A. C. NIELSEN COMPANY (Continued)
A. C. Nielsen S.A. (Continued)
ERIM S.A. France
Panel de Gestion S.A.R.L. France
ACNielsen S.A. Greece
A. C. Nielsen (Dublin) Limited Ireland
A. C. Nielsen of Ireland Limited Ireland
A. C. Nielsen Italia S.p.A. Italy
ACNielsen CRA S.r.l. Italy
Telepanel S.A. Italy
ACNielsen SITA S.r.l. Italy
ACNielsen Japan K.K. Japan
A. C. Nielsen, S.A. de C.V. Mexico
ACNielsen Centroamerica, S.A. Guatemala
ACNielsen Costa Rica S.A. Costa Rica
ACNielsen El Salvador, S.A. de C.V. El Salvador
ACNielsen de Honduras S.A. de C.V. Honduras
ACNielsen Nicaragua S.A. Nicaragua
ACNielsen Panama, S.A. Panama
ACNielsen (Nederland) B.V. The Netherlands
ACNielsen Czech Republic s.r.o. Czech Republic
ACNielsen (Polen) B.V. The Netherlands
ACNielsen d.o.o. Croatia
ACNielsen Polska Sp. z.o.o. Poland
ACNielsen South Africa B.V. The Netherlands
ACNielsen South Africa Holdings B.V. The Netherlands
Market Research Africa (Proprietary) Limited South Africa 65.0
ACNielsen ZET Arastirma Hizmetleri A.S. Turkey 85.0
Neslein Holding (Brazil) C.V. The Netherlands
ART Holding (Brazil) C.V. The Netherlands
ACNielsen do Brasil Ltda. Brazil
ACNielsen.CBPA Ltda. Brazil
ACNielsen Cayman Islands Ltd. Cayman Islands
ASEE Nielsen Holding (Brazil) C.V. The Netherlands
A. C. NIELSEN COMPANY (Continued)
Neslein Holding (Canada) C.V. The Netherlands
ACNielsen Holding (Canada) B.V. The Netherlands
ACNielsen Canada Holding Company Canada
ACNielsen Company of Canada Canada
ACNielsen Canada Partnership Canada
ACNielsen (Korea) Limited Korea
Neslein Holding (Spain) C.V. The Netherlands
ASEE Nielsen Holding (Spain) Srl Spain
N&P Holding Spain Srl Spain
A. C. Nielsen Company Srl. Spain
Infoadex S.A. Spain 50.0
ACNielsen EDI, S.L. Spain
Panel Internacional S.A. Spain
Menesta Investments B.V. Netherlands
Neslein Holding (Portugal) SGPS, Lda. Portugal
A.C. Nielsen Portugal - Estudos de Mercado S.A. Portugal
ACNielsen (NZ) Ltd. New Zealand
ACNielsen Norge AS Norway 98.9
ACNielsen Reklame-Statistikk AS Norway 85.6
ACNielsen de Puerto Rico, Inc. Puerto Rico
ACNielsen (Singapore) Pte. Ltd. Singapore
ACNielsen AB Sweden
A. C. Nielsen S.A. Switzerland
Media Focus Switzerland 50.0
A. C. Nielsen Management Services S.A. Switzerland
A. C. Nielsen (Argentina) S.A. Delaware
A.C. Nielsen Argentina S.A. Argentina
ACN/PIB Partners Connecticut 50.01
ART Holding, L.L.C. Delaware
Nielsen Holdings, Inc. Delaware
Nielsen Leasing Corporation Delaware
Panel International S.A. Delaware
ACNIELSEN EDI, INC. California
ACNIELSEN EDI II, INC. California
ACNIELSEN EDI GMBH Germany
ACN Marketing Research Holding GmbH Germany
A. C. Nielsen GmbH Germany
A. C. Nielsen Werbeforschung S&P GmbH Germany
ACNIELSEN ERATINGS.COM Delaware 80.1
ACNIELSEN HOLDINGS LIMITED Hong Kong
ACNielsen Management Services Limited Hong Kong
ACNielsen (Asia Pacific) Limited Hong Kong
ACNielsen (Taiwan) Limited Taiwan
ACNielsen (China) Ltd. Hong Kong
Shanghai ACNielsen Ltd. China 80.0
ACNielsen Group Limited Hong Kong
ACNielsen (Guangzhou) Limited China 92.0
ACNielsen International Research (Hong Kong) Limited Hong Kong
ACNielsen Holdings Pte. Ltd. Singapore
P.T. ACNielsen Indonesia Indonesia
ACNielsen Corporation Japan Japan
Hankook Research Co. Ltd. Korea 50.0
ACNielsen (Malaysia) Sdn. Bhd. Malaysia
ACNielsen Marketing Promotions (Malaysia) Sdn. Bhd. Malaysia
ACNielsen (Philippines) Inc. Philippines
ACNielsen Research (Singapore) Pte. Ltd. Singapore
ACNielsen (Thailand) Limited Thailand
ACNielsen (Vietnam) Limited Vietnam
ACNIELSEN HOLDINGS UK LIMITED England
A.C. Nielsen Company Limited England
ACNielsen EDI Limited England
Media Monitoring Services Ltd. England
ACNIELSEN INTERNATIONAL RESEARCH (UNITED STATES) LIMITED New York
ACNIELSEN (ISRAEL) LTD. Israel 90.0
ACNIELSEN MARKET DECISIONS, INC. Delaware
ACNIELSEN MARKETING RESEARCH INDIA PRIVATE LIMITED India
ACNielsen Research Services Private Limited India
TAM Media Research Private Limited India 50.0
BBI MARKETING SERVICES, INC. Delaware
BBI Operations, LLC Kentucky
BBIO, Inc. Kentucky
CZT/ACN TRADEMARKS, L.L.C. Delaware 50.0
NESLEIN HOLDING, L.L.C. Delaware
NESLEIN HOLDINGS (AUSTRALIA) C.V. The Netherlands
ACNielsen (Holdings) Pty. Limited Australia
AGB McNair Holdings Pty. Limited Australia
Surveys Australia Research Pty. Limited Australia
ACNielsen Research Pty. Limited Australia
McNair Anderson Associates Pty. Limited Australia
ACNielsen Advanced Analytics Pty. Limited Australia