Exhibit 32.1
CERTIFICATION PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I, Manuel D. Medina, hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:
(1) The accompanying quarterly report on Form 10-Q for the fiscal quarter ended June 30, 2005 fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and
(2) The information contained in such report fairly presents, in all material respects, the financial condition and results of operations of Terremark Worldwide, Inc.
| /s/ MANUEL D. MEDINA | |
| Manuel D. Medina | |
| Chairman of the Board | |
| President and Chief Executive Officer | |
| (Chief Executive Officer) |
Date: February 2, 2006