EXHIBIT 21 SUBSIDIARIES Coloconnection, a Florida corporation NAP of the Americas, Inc., a Florida corporation Park West Telecommunications Investors, Inc., a Florida corporation (1) TECOTA Services Corp., a Delaware corporation (2)(3) Terremark MedNAP, Inc., a Florida corporation Terremark Trademark Holdings, Inc., a Nevada corporation TerreNAP Data Centers, Inc., a Florida corporation (4) TerreNAP Services, Inc., a Florida corporation (5) (1) Park West Telecommunications Investors, Inc. is a significant shareholder or owns a significant interest in: Technology Center of the Americas, Inc., a Florida corporation (7) Technology Center of the Americas, Ltd., a Florida limited partnership (2) TECOTA Services Corp. is the sole shareholder of: T-Rex Miami, LLC, a Delaware limited liability company (3) TECOTA Services Corp. is a minority shareholder of: Technology Center of the Americas, LLC, a Delaware limited liability corporation (4) TerreNAP Data Centers, Inc., is the sole shareholder of: Spectrum Telecommunications Corp., a Delaware corporation (6) Terremark Asia Company, Ltd., a Bermuda corporation (8) Terremark Latin America, Inc., a Florida corporation (9)(10) (5) Terremark NAP Services, Inc. is the sole shareholder 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 (6) Spectrum Telecommunications Corp. is the sole shareholder of: Terremark Americas Group, a Delaware corporation (7) Technology Center of the Americas, Inc. owns a minority interest in: Technology Center of the Americas, Ltd., a Florida limited partnership (8) Terremark Asia Company, Ltd., a Bermuda corporation, is the sole shareholder of: Asia Connect, Ltd., a Bermuda corporation TerreNAP Data Centers (China), Ltd., a Bermuda corporation (9) Terremark Latin America, Inc. is a majority shareholder of: Terremark Latin America de Argentina, SA, an Argentine corporation Terremark Latin America (Brasil) Ltda, a Brazil corporation Terremark Latin America de Mexico, SA de CV, a Mexican corporation (10) Terremark Latin America, Inc. is a minority shareholder of: Terremark do Brasil Ltda, a Brazil corporation (11) (11) Terremark Latin America (Brasil) Ltda, a Brazil corporation, is a majority shareholder of: Terremark do Brasil Ltda, a Brazil corporation * Terremark Worldwide, Inc. owns a minority shareholder interest in: Terremark Latin America de Argentina, SA, an Argentine corporation Terremark Latin America (Brasil) Ltda, a Brazil corporation Terremark Latin America de Mexico, SA de CV, a Mexican corporation