Regions and Zones
Last updated: 2025-11-07 16:53:14
Concept Introduction
Regions
Regions refer to the geographic areas where physical data centers of Tencent Cloud are located. You can learn more about Regions and AZs of a product on the Tencent Cloud official website.
Tencent Cloud ensures maximum stability and fault tolerance between different regions through physical resource isolation.
Networks in different regions are completely isolated. Cloud products cannot communicate over private networks by default. Communication can only be achieved through public IP addresses or Cloud Connect Network (CCN).
AZs
Availability zones (AZs) refer to physical data centers within the same region, but with separate power supplies and networks. For more information, see List of Regions and AZs.
Faults between AZs are isolated from each other (except for large-scale disasters or major power outages), preventing the business impact caused by IDC device faults.
Within the same region, Virtual Private Cloud (VPC) instances can be deployed across AZs. The private networks within the same VPC instance across different AZs are interconnected, allowing direct access through private IP addresses.
Relationship Between a Region and an AZ
A region consists of one or more AZs. The private networks within the same VPC instance across different AZs in the same region are interconnected. AZs in different regions are completely independent.
How to Select a Region and an AZ?
When you select a region and an AZ, the following factors need to be considered:
Factor | Description |
Geographic location | The closer the distance between the user and the resource deployment region, the lower the network latency and the faster the access speed. To reduce access latency and improve access speed, it is recommended to select the region closest to your customers when purchasing CVM instances. |
Business communication | It is recommended to deploy multiple types of cloud products under the same business in the same AZ of a region, enabling communication over the private network to reduce access latency and improve access speed. For different businesses requiring private network interconnection, deploy them in the same region. If there are no private network interconnection requirements for businesses, deploy them across different regions as needed. |
Disaster recovery | It is recommended to deploy your businesses at least in the same VPC instance that is in the same region but across different AZs, ensuring fault isolation between AZs and achieving cross-AZ disaster recovery. There may be network communication latency between different AZs. Evaluate it according to your actual business requirements to find the optimal balance between high availability and low latency. |
List of Regions and AZs
China
Region | Region ID | Number of AZs | AZ | AZ ID |
South China (Guangzhou) | ap-guangzhou | 2 | Guangzhou Zone 6 | ap-guangzhou-6 |
| | | Guangzhou Zone 7 | ap-guangzhou-7 |
East China (Shanghai) | ap-shanghai | 3 | Shanghai Zone 2 | ap-shanghai-2 |
| | | Shanghai Zone 5 | ap-shanghai-5 |
| | | Shanghai Zone 8 | ap-shanghai-8 |
East China (Nanjing) | ap-nanjing | 2 | Nanjing Zone 1 | ap-nanjing-1 |
| | | Nanjing Zone 3 | ap-nanjing-3 |
North China (Beijing) | ap-beijing | 3 | Beijing Zone 6 | ap-beijing-6 |
| | | Beijing Zone 7 | ap-beijing-7 |
| | | Beijing Zone 8 | ap-beijing-8 |
Southwest China (Chengdu) | ap-chengdu | 1 | Chengdu Zone 1 | ap-chengdu-1 |
Southwest China (Chongqing) | ap-chongqing | 1 | Chongqing Zone 1 | ap-chongqing-1 |
Northwest China (Zhongwei) | ap-zhongwei | 1 | Zhongwei Zone 1 | ap-zhongwei-1 |
Hong Kong (China), Macao (China), and Taiwan (China) | ap-hongkong | 2 | Hong Kong (China) Zone 2 | ap-hongkong-2 |
| | | Hong Kong (China) Zone 3 | ap-hongkong-3 |
Note:
Tencent Cloud has a total of 12 regions and 42 AZs in China. If you need to use AZs not listed above (due to AZ policy adjustments or industry-specific zones), contact the Tencent Cloud salesperson to purchase.
Other Countries and Regions
Region | Region ID | Number of AZs | AZ | AZ ID |
Asia Pacific and the Middle East (Singapore) | ap-singapore | 4 | Singapore Zone 1 | ap-singapore-1 |
| | | Singapore Zone 2 | ap-singapore-2 |
| | | Singapore Zone 3 | ap-singapore-3 |
| | | Singapore Zone 4 | ap-singapore-4 |
Asia Pacific and the Middle East (Jakarta) | ap-jakarta | 3 | Jakarta Zone 1 | ap-jakarta-1 |
| | | Jakarta Zone 2 | ap-jakarta-2 |
| | | Jakarta Zone 3 | ap-jakarta-3 |
Asia Pacific and the Middle East (Seoul) | ap-seoul | 2 | Seoul Zone 1 | ap-seoul-1 |
| | | Seoul Zone 2 | ap-seoul-2 |
Asia Pacific and the Middle East (Tokyo) | ap-tokyo | 2 | Tokyo Zone 1 | ap-tokyo-1 |
| | | Tokyo Zone 2 | ap-tokyo-2 |
Asia Pacific and the Middle East (Bangkok) | ap-bangkok | 2 | Bangkok Zone 1 | ap-bangkok-1 |
| | | Bangkok Zone 2 | ap-bangkok-2 |
Asia Pacific and the Middle East (Saudi Arabia) | me-saudi-arabia | 2 | Riyadh Zone 1 | me-saudi-arabia-1 |
| | | Riyadh Zone 2 | me-saudi-arabia-2 |
Europe and the Americas (São Paulo) | sa-saopaulo | 1 | São Paulo Zone 1 | sa-saopaulo-1 |
| | | | |
Europe and the Americas (Silicon Valley) | na-siliconvalley | 2 | Silicon Valley Zone 1 | na-siliconvalley-1 |
| | | Silicon Valley Zone 2 | na-siliconvalley-2 |
Europe and the Americas (Virginia) | na-ashburn | 2 | Virginia Zone 1 | na-ashburn-1 |
| | | Virginia Zone 2 | na-ashburn-2 |
Europe and the Americas (Frankfurt) | eu-frankfurt | 2 | Frankfurt Zone 1 | eu-frankfurt-1 |
| | | Frankfurt Zone 2 | eu-frankfurt-2 |
Note:
Tencent Cloud has a total of 10 regions and 22 AZs outside China. You can contact the Tencent Cloud salesperson to purchase.
Resource Location Description
CVM-related resources have region and AZ attributes. For details, see the following table.
Resource | Resource ID Format | Type | Description |
User account | Unlimited | Unique in the world | Users can use the same account to access resources of Tencent Cloud all over the world. |
skey-xxxxxxxx | Available for all regions | Users can use the SSH key to bind CVM instances in any region under their account. | |
ins-xxxxxxxx | Available in a single AZ | Users can only create CVM instances in specific AZs. | |
img-xxxxxxxx | Available for multiple AZs in a single region | Users can create custom images of instances and use them across different AZs in the same region. To use them in other regions, use the image replication feature to replicate the custom images to other regions. | |
eip-xxxxxxxx | Available for multiple AZs in a single region | Elastic IP addresses are created in a certain region, and can only be associated with instances in the same region. | |
sg-xxxxxxxx | Available for multiple AZs in a single region | Security groups are created in a certain region, and can only be associated with instances in the same region. Tencent Cloud creates three default security groups for users automatically. | |
disk-xxxxxxxx | Available in a single AZ | Users can only create cloud disks in specific AZs and attach them to instances in the same AZ. | |
snap-xxxxxxxx | Available for multiple AZs in a single region | After a snapshot is created for a certain cloud disk, users can use the snapshot to perform other operations (such as creating cloud disks) in the region. | |
clb-xxxxxxxx | Available for multiple AZs in a single region | CLB can be bound to CVM instances deployed across different AZs in the same region for traffic forwarding. | |
vpc-xxxxxxxx | Available for multiple AZs in a single region | A VPC instance is created in a certain region, and resources belonging to the same VPC instance can be created in different AZs. | |
subnet-xxxxxxxx | Available in a single AZ | Within a VPC instance, a subnet can only belong to a single AZ. | |
rtb-xxxxxxxx | Available for multiple AZs in a single region | Users need to specify a specific VPC when creating a route table, and the route table inherits the location attributes of the VPC. |
API-related Operations
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