A registration statement relating to Rackspace's common stock has been filed with the Securities and Exchange Commission but has not yet become effective. Rackspace's common stock may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This communication shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of Rackspace's common stock in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state. No offer to buy shares of Rackspace's common stock can be accepted and no part of the purchase price can be received until the registration statement has become effective, and any such offer may be withdrawn or revoked, without obligation or commitment of any kind, at any time until the notice of acceptance is sent after the effectiveness of the registration statement.

The offering of the common stock may be made only by means of a prospectus. Copies of the preliminary prospectus for the offering may be obtained, when available, from Goldman, Sachs & Co., Attn: Prospectus Department, 85 Broad Street, New York, New York 10004, via fax at 212-902-9316, or via e-mail at prospectus-ny@ny.email.gs.com; Credit Suisse Securities (USA) LLC, Attn: Prospectus Department, One Madison Avenue, New York, NY 10010, telephone 800-221-1037; and Merrill Lynch, Pierce, Fenner & Smith Incorporated, 4 World Financial Center, New York, New York 10080, phone: 866-500-5408.