Exhibit 21.1

Subsidiaries of the Registrant

Edgio Networks Canada, Inc.(Réseaux Edgio Canada Inc.) incorporated in Canada

Edgio do Brasil Ltda incorporated in Brazil

Edgio France SARL incorporated in France

Edgio Germany GmbH incorporated in Germany

Edgio Hong Kong Limited incorporated in Hong Kong

Edgio Solutions India Private Limited incorporated in India

Limelight Networks International, Inc. incorporated in Delaware

Edgio Italia S.r.l. incorporated in Italy

Edgio Japan, Ltd. incorporated in Japan

Edgio Korea Ltd. incorporated in Korea

Edgio Netherlands B.V. incorporated in Netherlands

Edgio Singapore PTE LTD. incorporated in Singapore

Edgio UK Limited incorporated in the United Kingdom

Edgio Ukraine, LLC incorporated in Ukraine

Limelight Networks VPS, Inc. incorporated in Delaware

Edgio, Inc. incorporated in Delaware

Limelight Web Technologies (IL) Ltd. incorporated in Israel

Mojo Merger Sub, LLC incorporated in California

Limelight MidCo, Inc. incorporated in Delaware

Limelight AcquisitionCo, Inc. incorporated in Delaware

Edgecast, Inc. incorporated in California

Edgecast Taiwan Limited incorporated in Taiwan

Edgecast Canada ULC incorporated in Canada

Edgecast Services Limited (UK) incorporated in the United Kingdom

Edgecast Limited (UK) incorporated in the United Kingdom