21Vianet Group, Inc. Announces Closing of Initial Public Offering and Exercise of Over-Allotment Option

BEIJING, April 28, 2011 (GLOBE NEWSWIRE) -- 21Vianet Group, Inc. (Nasdaq:VNET) ("21Vianet" or the "Company"), the largest carrier-neutral Internet data center services provider in China, announced today that it has closed its initial public offering of 14,950,000 American depositary shares ("ADSs"), including 1,950,000 ADSs purchased by the underwriters pursuant to the exercise of their over-allotment option in full. Each ADS represents six Class A ordinary shares of the Company and was sold at the price to the public of US$15.00 per ADS. The total gross proceeds to the Company from this initial public offering were US$224.25 million.

Morgan Stanley, Barclays Capital Inc. and J.P. Morgan Securities LLC acted as joint bookrunners, and Piper Jaffray & Co., William Blair & Company, L.L.C. and Pacific Crest Securities LLC acted as co-managers for the offering.

21Vianet's registration statement relating to the initial public offering has been filed with, and declared effective by, the United States Securities and Exchange Commission. This press release does not constitute an offer to sell or a solicitation of an offer to buy any securities, nor shall there be any sale of these securities, in any state or other jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

The offering of the securities is made only by means of a prospectus forming a part of the effective registration statement. A copy of the final prospectus relating to the offering may be obtained by contacting Morgan Stanley, Attn: Prospectus Department, 180 Varick Street, 2nd Floor, New York, New York 10014, United States, by calling +1-866-718-1649 or by emailing prospectus@morganstanley.com; Barclays Capital Inc., c/o Broadridge Integrated Distribution Services, 1155 Long Island Avenue, Edgewood, New York 11717, United States, by calling +1-888-603-5847 or by emailing Barclaysprospectus@broadridge.com; or J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, United States, or by calling +1-866-803-9204.

About 21Vianet

21Vianet is the largest carrier-neutral Internet data center services provider in China. 21Vianet provides hosting and related services, managed network services and cloud computing infrastructure, improving the reliability, security and speed of its customers' Internet connections through 21Vianet's Internet infrastructure. Customers may locate their servers and networking equipment in one of 21Vianet's data centers and connect to China's Internet backbone through 21Vianet's extensive fiber optic network. In addition, its proprietary smart routing technology, BroadEx, enables customers' data to be delivered across the Internet in a faster and more reliable manner. 21Vianet operates in 33 cities throughout China, servicing a diversified and loyal base of more than 1,300 customers that span many industries ranging from Internet companies to government entities and blue-chip enterprises to small- to mid-sized enterprises.

CONTACT: Investor Relations Contact:

         ICR, LLCJeremy Peruski

         +1 (646) 405-4922

         IR@21Vianet.com
Source: 21Vianet

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