Davis Polk advised Morgan Stanley & Co. International plc, Barclays Capital Inc. and J.P. Morgan Securities LLC as joint bookrunners and representatives of the underwriters of the initial public offering by 21Vianet Group, Inc. (21Vianet) of 14,950,000 American Depositary Shares (ADSs), each representing six Class A ordinary shares of 21Vianet. The ADSs include 1,950,000 ADSs purchased by the underwriters pursuant to the exercise of their over-allotment option in full. Priced at US$15.00 per ADS, the gross proceeds of the offering were approximately US$224.3 million. The ADSs are listed on the NASDAQ Global Market under the symbol “VNET.”

Headquartered in Beijing, China, 21Vianet is a carrier-neutral Internet data center services provider in China. 21Vianet hosts its customers’ servers and networking equipment and provides interconnectivity to improve the performance, availability and security of its Internet infrastructure. 21Vianet also provides managed network services to enable customers to deliver data across the Internet in a faster and more reliable manner through its extensive data transmission network and its proprietary BroadEx smart routing technology.

The Davis Polk corporate team included partners Howard Zhang and Mark J. Lehmkuhler, associates Stephen Takahashi, Bate Yu, Hua Fan and Xiaoxi Lin and registered foreign lawyer Jae Myung Kim. Partner John D. Paton and associate Adam B. Perry provided tax advice. Counsel Marcie A. Goldstein provided FINRA advice. Xiao Jing Yang was the legal assistant on the transaction. Members of the Davis Polk team are based in the Beijing, Hong Kong, London and New York offices.