VNET Group
Note: We are not affiliated with the data centers or companies listed below. Listings are compiled from public sources and have not been independently confirmed by us — please verify directly with the company before relying on this information.
VNET Group (Nasdaq: VNET), formerly known as 21Vianet, is a Beijing-headquartered internet data center operator that is widely described as the largest private, carrier-neutral data center and hosting company in China. As of 2024, the company states it operates over 50 data centers in more than 30 Chinese cities, with wholesale IDC capacity of 907MW and over 49,000 retail cabinets in service, split between self-built and JV/partnered facilities. Its business spans colocation and managed hosting for enterprise customers, plus a notable role as the exclusive licensed operator of Microsoft Azure and Microsoft 365 in mainland China — a unique arrangement that makes VNET one of the few non-Microsoft entities anywhere in the world actually running Azure infrastructure. VNET has increasingly pivoted toward AI/GPU infrastructure, building dedicated “AIDC” (AI data center) campuses such as the Ulanqab Green G-watt AIDC flagship base and the Huailai Super AIDC node, aimed at large-model training and inference workloads, alongside its traditional retail and wholesale colocation business.
VNET Group operates as a cloud provider and colocation provider, with facilities at the following locations:
FACILITY OPERATOR
Phone: +86 10 8456 2121 Email: [email protected]
Are you an authorized representative of VNET Group? Manage this company listing →
VNET Group Data Center Locations
- Beijing, China BJ15 Data Center CARRIER-NEUTRAL PENDING REVIEW
- Guangzhou, China GZ02-04 Data Center CARRIER-NEUTRAL PENDING REVIEW
The site is noted for being only about 3 kilometers from the Jing-Shen Expressway and roughly 32 kilometers from the nearest high-speed rail station, giving it strong regional transport and fiber connectivity. - Shenzhen, China Shenzhen Data Center (Shenzhen Software Industrial Base, Nanshan) PENDING REVIEW
- Sanhe, China Sanhe Mingtai Data Center PENDING REVIEW
The facility was selected as a "Data Center Implementation Model Project" in 2021 by an industry award program. - Huailai, China Huailai Super Artificial Intelligence Data Center (AIDC) NodeAI DATA CENTER PENDING REVIEW
The facility is part of China's national "East to West Computing" (East Data West Computing) demonstration project cluster in Zhangjiakou. - Ulanqab, China Ulanqab Green G-watt AIDC Super Intelligent Computing Flagship BaseAI DATA CENTER PENDING REVIEW
The base is cited in Chinese national policy circles, with its 'Computing-Power Coordinated Near-Zero Carbon Data Center' included on the NDRC's list of green and low-carbon demonstration projects. - Suzhou, China Suzhou Data Center (Kunshan Creative Industrial Park) PENDING REVIEW
- Taicang, China Taicang Big Data Intelligent Computing Center BaseAI DATA CENTER PENDING REVIEW
It is described as VNET's flagship computing power center for East China, built inside the Taicang Internet of Vehicles Big Data Industrial Park. - Xi'an, China Xi'an Data Center PENDING REVIEW
- Shanghai, China Shanghai Baoshan Data Center (100 Hulan West Road) PENDING REVIEW
- Shanghai, China Shanghai Waigaoqiao Data Center PENDING REVIEW
The facility passed VNET's internal management-and-operations (M&O) certification with a high score, as noted in the company's own corporate history. - Hangzhou, China Hangzhou Data Center PENDING REVIEW
- Ningbo, China Ningbo Data Center TIER III PENDING REVIEW
The facility is located in the Ningbo Hi-Tech Industrial Zone and is positioned to serve cross-border e-commerce, manufacturing and financial-services customers across the Yangtze River Delta.
By Continent
VNET Group AI Data Centers
VNET has built out several facilities specifically framed around AI and large-model compute rather than general colocation. The Ulanqab Green G-watt AIDC Super Intelligent Computing Flagship Base in Inner Mongolia is described by the company as a flagship site for gigawatt-scale intelligent computing supporting AI and large-model workloads for major internet enterprises. The Huailai Super AIDC node in Hebei is explicitly positioned as a high-density GPU cluster for large-model training, inference, and AGI-scenario workloads, while the Taicang Big Data Intelligent Computing Center Base near Shanghai is described as running a large-scale domestic cold-plate liquid cooling cluster.
- Huailai, China Huailai Super Artificial Intelligence Data Center (AIDC) Node AI DATA CENTER PENDING REVIEW
The facility is part of China's national "East to West Computing" (East Data West Computing) demonstration project cluster in Zhangjiakou. - Taicang, China Taicang Big Data Intelligent Computing Center Base AI DATA CENTER PENDING REVIEW
It is described as VNET's flagship computing power center for East China, built inside the Taicang Internet of Vehicles Big Data Industrial Park. - Ulanqab, China Ulanqab Green G-watt AIDC Super Intelligent Computing Flagship Base AI DATA CENTER PENDING REVIEW
The base is cited in Chinese national policy circles, with its 'Computing-Power Coordinated Near-Zero Carbon Data Center' included on the NDRC's list of green and low-carbon demonstration projects.
Common Questions
Does VNET Group operate dedicated AI/GPU data centers?
Yes. VNET's own site describes the Huailai Super AIDC node in Hebei as a demonstration base combining high-density racks, GPUs, and large-model training/inference infrastructure, and describes the Ulanqab Green G-watt AIDC Super Intelligent Computing Flagship Base in Inner Mongolia as a flagship site for G-watt-scale super intelligent computing supporting large-model and AI computing needs.
Is VNET Group the same company as 21Vianet?
Yes — VNET Group is the current name of the company previously known as 21Vianet Group, Inc., a Cayman Islands holding company still trading on Nasdaq under the ticker VNET.
Does VNET run Microsoft Azure in China?
Yes, VNET is described as the exclusive operator of Microsoft Azure and Microsoft 365 services in China under a long-standing partnership with Microsoft.
How many cities does VNET operate data centers in?
As of the company's own 2024/2025 disclosures, VNET operates over 50 data centers across more than 30 cities in China, split between self-built and partnered/joint-venture facilities.
Does VNET Group offer colocation services?
VNET Group is classified as a colocation provider among other services it offers — we can't confirm which specific facilities provide colocation services. Please contact VNET Group directly to confirm colocation availability.
Does VNET Group offer cloud services?
VNET Group is classified as a cloud provider among other services it offers — we can't confirm which specific facilities provide cloud services. Please contact VNET Group directly to confirm cloud availability.
Disclaimer: This page was compiled with a structured research and verification process from publicly available sources. A human decides whether each page is published, but individual facts — addresses, contact details, and whether a company operates in a given location — are not independently fact-checked by us. Where you see a “Verified” badge, it means multiple independent sources agreed, not that we personally confirmed it. Companies open, close, relocate, and change contact details without always updating public records, so treat everything here as a starting point, not a confirmed source. If you're making a business decision, verify directly with the provider. Notice something outdated or incorrect? You're welcome to let us know — this site is updated periodically.
Are you a representative of a company listed here? Manage your company listing →