EXHIBIT 21.1

SUBSIDIARIES

NAP of the Americas/West Inc., a Florida corporation

Park West Telecommunications Investors, Inc., a Florida corporation

TECOTA Services Corp., a Delaware corporation

Terremark Trademark Holdings, Inc., a Nevada corporation

TerreNAP Data Centers, Inc., a Florida corporation

TerreNAP Services, Inc., a Florida corporation

Optical Communications, Inc., a Florida corporation

NAP of the Capital Region LLC, a Florida corporation

TECOTA Services Corp. owns a 100% interest in:

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

TerreNAP Data Centers, Inc., is the sole shareholder of:

NAP of the Americas, Inc., a Florida corporation

Terremark Asia Company, Ltd., a Bermuda corporation

Terremark Latin America, Inc., a Florida corporation

Terremark Europe, Inc., a Florida corporation

Data Return LLC, a Delaware limited liability company

TerreNAP 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

Terremark Latin America, Inc. is the sole shareholder of:

Terremark Colombia Inc., a BVI company

Spectrum Telecommunications Corp., a Delaware corporation

Terremark del Caribe, Inc., a BVI company

Terremark Latin America, Inc. owns 99% of:

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

Terremark Latin America (Brasil) Ltda., a Brazilian corporation

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

Terremark Latin America, Inc. is a minority shareholder of:

Terremark do Brasil Ltda., a Brazil corporation

Terremark Latin America (Brasil) Ltda, a Brazil corporation, is a majority shareholder of:

Terremark do Brasil Ltda., a Brazil corporation

Terremark Europe, Inc. is the sole shareholder of:

Terremark, N.V., a Netherlands corporation

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

Terremark Worldwide, Inc. owns a minority shareholder interest in:

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

Terremark Latin America (Brasil) Ltda, a Brazil corporation

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

Terremark Worldwide is the sole shareholder of:

Terremark Federal Group Inc., a Delaware corporation

Terremark Worldwide owns 100% of:

NAP de las Americas — Madrid, S.A.

Terremark Asia is a majority shareholder of:

Terremark (Hong Kong) — Limited, a Hong Kong Corp. (Dormant)

Terremark Federal Group owns 49% of Terre Light, LLC, a Delaware corporation

Data Return LLC is the sole shareholder of:

digital OPS LLC, a Delaware limited liability company

Terremark UK Limited, a United Kingdom company