Equinix Announces Secondary Offering of Common Stock by SIT Communications

Oct 31, 2005

Foster City, CA — October 31, 2005 — Equinix, Inc. (Nasdaq: EQIX), the leading provider of network-neutral data centers and Internet exchange services, today announced that STT Communications, through its affiliates, intends to sell 5.15 million shares of Equinix Common Stock in an underwritten public offering. Concurrently with the offering, STT Communications also plans to enter into a pre-paid forward contract with Credit Suisse First Boston Capital LLC to sell up to an additional 4.3 million shares of Common Stock, an affiliate of which intends to publicly offer securities exchangeable for Equinix Common Stock.

STT Communications intends to grant the underwriters an option to purchase up to 739,549 additional shares to cover over-allotments, if any.

The secondary offering of common stock is being made through an underwriting syndicate led by Citigroup Global Markets Inc. and Credit Suisse First Boston LLC, as joint bookrunners, and Goldman, Sachs & Co. as co-manager. The exchangeable offering is being made through an underwriting syndicate led by Credit Suisse First Boston LLC as bookrunner, with Citigroup Global Markets Inc. and Goldman, Sachs & Co. acting as co-managers.

Interested parties may obtain a written prospectus relating to the common stock offering from Citigroup, Brooklyn Army Terminal, 140 58th Street, 8th floor, Brooklyn, New York 11220 or Credit Suisse First Boston LLC, Prospectus Department, One Madison Avenue, New York, NY 10010. Interested parties may obtain a written prospectus relating to the exchangeable securities offering from Credit Suisse First Boston LLC, Prospectus Department, One Madison Avenue, New York, NY 10010.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to the registration or qualification under the securities laws of any such jurisdiction. Offers to sell any security will be made only by means of a prospectus.

Forward Looking Statements

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.

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