Contact support for China

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Phone number

800 988 0365

Hours

Billing Support:

Chinese (Mandarin): Mon-Fri 9 AM-6 PM

English: Mon-Fri 9 AM-6 PM

Technical Support:

Chinese (Mandarin): Mon-Fri 9 AM-6 PM

English: 24 hours a day, 7 days a week

Alternative Phone Number: 400 920 0365 (Mobile)

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Contact support for Office 365 operated by 21Vianet only

Phone number

+86 4000 890 365

Hours

Billing Support:

Chinese and English: Mon-Fri 9 AM-6 PM

Technical Support:

Chinese and English phone support: Mon-Fri 9 AM-9 PM

Chinese and English online support (through the admin center): 24 hours a day, 7 days a week