Exhibit 21

SUBSIDIARIES

Terremark Worldwide, a Delaware corporation, owns 100% of:

     NAP de las Américas — Madrid, S.A.U.

     NAP of the Capital Region, LLC, a Florida limited liability company

     NAP West, LLC, a Delaware limited liability company

     Park West Telecommunications Investors, Inc., a Florida corporation

     TECOTA Services Corp., a Delaware corporation, owns 100% of:

          Technology Center of the Americas, LLC, a Delaware limited liability company

     Terremark Federal Group, Inc., a Delaware corporation

     Terremark Trademark Holdings, Inc., a Nevada corporation

     TerreNAP Data Centers, Inc., a Florida corporation, owns 100% of:

          Terremark North America, Inc., a Florida corporation, owns 100% of:

               Terremark DataVaulting LLC, a Virginia limited liability company

          Terremark Asia Company, Ltd., a Bermuda corporation

          Terremark Latin America, Inc., a Florida corporation, owns 100% of:

               Spectrum Telecommunications Corp., a Delaware corporation

               Terremark Colombia, Inc., a BVI company

               Terremark del Caribe, Inc., a BVI company

               Terremark do Brasil Ltda., a Brazilian limited liability company

          Terremark Europe, Inc., a Florida corporation, owns 100% of:

               Terremark N.V., a Belgian limited liability company

               Terremark UK Limited, a United Kingdom company

               Terremark West Africa Canary Islands, S.L.U., a Spanish corporation

     TerreNAP Services, Inc., a Florida corporation, owns 100% of:

          Terremark Financial Services, Inc., a Florida corporation

          Terremark Fortune House #1, Inc., a Florida corporation

          Terremark Management Services, Inc., a Florida corporation

          Terremark Realty, Inc., a Florida corporation

          Terremark Technology Contractors, Inc., a Florida corporation

Terremark Worldwide, Inc. owns a minority interest in:

     Terremark Latin America de Argentina, S.A., an Argentine sociedad anónima

     Terremark Latin America de Mexico, S.A. de C.V., a Mexican sociedad anónima de capital variable

Terremark Latin America, Inc. owns 99% of:

     Terremark Latin America de Argentina, S.A., an Argentine sociedad anónima

     Terremark Latin America de Mexico, S.A. de C.V., a Mexican sociedad anónima de capital variable

Terremark Federal Group owns 49% of:

     TerreLight, LLC, a Delaware limited liability company