21Vianet Group, Inc. to Announce Second Quarter 20

BEIJING, July 29, 2013 (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 plans to release its second quarter 2013 financial results on Tuesday, August 20, 2013 after market close. The Company will hold a conference call on Tuesday, August 20, 2013 at 8:00 pm Eastern Time, or Wednesday, August 21, 2013 at 8:00 am Beijing Time to discuss the financial results.

Participants may access the call by dialing the following numbers:

The replay will be accessible through August 27, 2013 by dialing the following numbers:

A live and archived webcast of the conference call will be available through the Company's investor relation website at http://ir.21vianet.com .

About 21Vianet

21Vianet Group, Inc. is the largest carrier-neutral internet data center services provider in China. 21Vianet provides hosting and related services, managed network services, cloud infrastructure services, and content delivery network services, improving the reliability, security and speed of its customers' 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 enables customers' data to be delivered across the internet in a faster and more reliable manner. 21Vianet operates in 43 cities throughout China, servicing a diversified and loyal base of more than 2,000 customers that span many industries ranging from internet companies to government entities and blue-chip enterprises to small- to mid-sized enterprises.

Investor Relations Contact: 21Vianet Group, Inc. Joseph Cheng +86 10 8456 2121 ICR, Inc. Jeremy Peruski +1 (646) 405-4922