Ticker: VNET, Company: 21Vianet Group, Inc., Type: F-1MEF, Date: 2011-04-21
Original SEC Filing: Click here

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Webplus: VNET/20110421/F-1MEF/1/000.htm SEC Original: df1mef.htm

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Webplus: VNET/20110421/F-1MEF/2_EX-5.1/000.htm SEC Original: dex51.htm
Our ref VZL\653749\4416045v4 Direct tel +852 2971 3095 Email valerie.law@maplesandcalder.com 21Vianet Group, Inc. M5, 1 Jiuxianqiao East Road Chaoyang District Beijing 100016 People’s Republic of China 20 April 2011 Dear Sirs 21Vianet Group, Inc. Company Registration Statement Rule 462(b) Registration Statement ADSs Shares We have acted as Cayman Islands legal advisers to 21Vianet Group Inc. (the “ 1 Documents Reviewed

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Webplus: VNET/20110421/F-1MEF/3_EX-23.1/000.htm SEC Original: dex231.htm
Consents of Independent Registered Public Accounting Firm Shanghai, the People’s Republic of China April 21, 2011 EX-23.1 3 dex231.htm CONSENTS OF ERNST & YOUNG HUA MING

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Company Information:

Ticker: VNET, Company: 21Vianet Group, Inc., Type: F-1MEF, Date: 2011-04-21CIK: 0001508475, Location: F4, SIC: 7370, SIC Desc: SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
Business Phone & Address:
M5, 1JIUXIANQIAO EAST ROAD
Beijing 100016