Newsroom Press Release

October 6, 2005

Equinix Files Shelf Registration Statement

Foster City, CA — October 6, 2005 — Equinix, Inc. (Nasdaq: EQIX), the leading provider of network-neutral data centers and Internet exchange services, today announced that it has filed a shelf registration statement with the Securities and Exchange Commission in order to register 10,188,812 shares of the company's common stock. All of the shares covered in this shelf registration may be offered by STT Communications Ltd, through one or more of its subsidiaries, including i-STT Investments Pte Ltd (together "STT") as the selling stockholder. There are no additional shares included in this shelf registration statement, other than what has previously been reported in our quarterly filings with the Securities and Exchange Commission.

The completion of any such offering will depend on a number of factors, including general market conditions and other factors that STT may deem relevant. The registration statement will facilitate the orderly disposition of STT's shares. At the time any securities are offered for sale, one or more prospectus supplements will be provided containing specific information about the terms of any such offering.

Déclarations prospectives

This press release contains forward-looking statements that involve risks and uncertainties. Actual results may differ materially from expectations discussed in such forward-looking statements. Factors that might cause such differences include, but are not limited to, the challenges of acquiring, operating and constructing IBX centers and developing, deploying and delivering Equinix services; unanticipated costs or difficulties relating to the integration of IXEurope into Equinix; a failure to receive significant revenue from customers in recently built out data centers; failure to complete any financing arrangements contemplated from time to time; competition from existing and new competitors; the ability to generate sufficient cash flow or otherwise obtain funds to repay new or outstanding indebtedness; the loss or decline in business from our key customers; the results of any litigation relating to past stock option grants and practices; and other risks described from time to time in Equinix's filings with the Securities and Exchange Commission. In particular, see Equinix's recent quarterly and annual reports filed with the Securities and Exchange Commission, copies of which are available upon request from Equinix. Equinix does not assume any obligation to update the forward-looking information contained in this press release.

Equinix and IBX are registered trademarks of Equinix, Inc. Internet Business Exchange is a trademark of Equinix, Inc.