Regions and AZs
Last updated: 2025-03-21 14:52:15
TencentDB data centers are hosted in multiple locations worldwide. These locations are known as regions. Each region contains multiple availability zones (AZs).
Each region is an independent geographic area with multiple isolated AZs. Separate AZs in the same region are connected via low-latency private networks. Tencent Cloud allows you to distribute Tencent Cloud resources across different locations. We recommend placing resources in different AZs to eliminate single points of failure which may lead to service unavailability.
Region name and AZ name can most directly embody the coverage of a data center. The following naming convention is used for your convenience:
A region name is composed of region + city. The
region indicates the geographic area that the data center covers, while the city represents the city in or near which the data center is located.AZ names utilize the format of city + number.
Regions
Tencent Cloud regions are isolated. This guarantees the maximum cross-region stability and fault tolerance. When purchasing Tencent Cloud services, we recommend selecting the region closest to your end users to minimize access latency and improve download speed. Operations such as launching or viewing instances are performed at the region level.
Private network communication:
Tencent Cloud resources in the same VPC within the same region under the same account can communicate with each other over private network. They can also be accessed at the private IP as described in Private Network Access.
The networks of different regions are isolated from each other, and Tencent Cloud services in different regions cannot communicate over private network by default.
Tencent Cloud services in different VPCs can communicate with each other over CCN which is fast and stable.
AZs
An availability zone (AZ) is a physical IDC of Tencent Cloud with independent power supply and network in the same region. It can ensure business stability, as failures (except for major disasters or power failures) in one AZ are isolated without affecting other AZs in the same region. By starting an instance in an independent AZ, users can protect their applications from being affected by a single point of failure.
Supported Regions and AZs
Note：
Resources available in different regions and AZs may be sold out and become unavailable, and previously sold-out resources may be replenished. The resource availability will be assessed and adjusted based on the actual business usage as displayed on the purchase page in the console.
China
Region | AZ |
South China (Guangzhou) ap-guangzhou | Guangzhou Zone 4 ap-guangzhou-4 |
East China (Shanghai) ap-shanghai | Shanghai Zone 2 ap-shanghai-2 |
| Shanghai Zone 3 ap-shanghai-3 |
North China (Beijing) ap-beijing | Beijing Zone 1 ap-beijing-1 |
Southwest (Chongqing) ap-chongqing | Chongqing Zone 1 ap-chongqing-1 |
Hong Kong/Macao/Taiwan (Hong Kong, China) ap-hongkong | Hong Kong Zone 3 (Hong Kong nodes cover services in the China regions of Hong Kong, Macao, and Taiwan) ap-hongkong-3 |
Other countries and regions
Region | AZ |
Southeast Asia Pacific (Singapore) ap-singapore | Singapore Zone 2 (Singapore nodes cover services in Southeast Asia) ap-singapore-2 |
Southeast Asia Pacific (Bangkok) ap-bangkok | Bangkok Zone 2 (Bangkok nodes cover services in Southeast Asia) ap-bangkok-2 |
Northeast Asia (Seoul) ap-seoul | Seoul Zone 2 (Seoul nodes cover services in Northeast Asia) ap-seoul-2 |
Silicon Valley na-siliconvalley | Silicon Valley Zone 2 (Silicon Valley nodes cover services in US) na-siliconvalley-2 |
Europe Zone (Frankfurt) eu-frankfurt | Frankfurt Zone 2 (Frankfurt nodes cover services in Europe) eu-frankfurt-2 |
Selection of Regions and AZs
When you purchase Tencent Cloud services, we recommend that you select the region closest to your end users to minimize access latency and improve download speed.
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