21Vianet Group, Inc. Announces August Investor Conference Participation

BEIJING, July 26, 2011 (GLOBE NEWSWIRE) -- 21Vianet Group, Inc. (Nasdaq:VNET) ("21Vianet" or the "Company"), the largest carrier-neutral Internet data center services provider in China, today announced that it will present at Pacific Crest's 13th Annual Technology Leadership Forum to be held August 7-9, 2011 at Sonnealp Resort in Vail, CO. Management is currently scheduled to meet with institutional investors and to present on Tuesday, August 9, 2011.  

The Company will also be presenting at Oppenheimer's 14th Annual Technology & Communications Conference to be held in August 9 — 10, 2011 at the Four Seasons Hotel in Boston, MA. Management is currently scheduled to meet with institutional investors and to present at 4:25 p.m. ET on Wednesday, August 10, 2011.  

For additional information, please contact your respective institutional sales representative.

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 21Vianet's data centers and connect to China's Internet backbone through 21Vianet's extensive fiber optic network. In addition, 21Vianet's 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 1,400 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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