Regions and Access Endpoints
Last updated: 2025-10-20 16:27:49
Regions
Region refers to the distribution region of Tencent Cloud Hosted Data Centers. Data in Cloud Object Storage (COS) is stored in buckets within these regions. Through COS, you can perform multi-region storage. Typically, COS recommends you select the region closest to your business to create a bucket, meeting low delay, low cost, and compliance requirements.
For example, if your business is in the South China region, then creating a bucket in the Guangzhou region can further improve object upload and download speed.
Default Domain Name
The default domain name refers to the COS default bucket domain name, which is automatically generated by the system based on bucket name and region when a user creates a bucket. Buckets in different regions have different default domain names. For more information, see the following table.
Note:
Financial cloud regions and public cloud regions are not interconnected.
Chinese mainland
Region | Region Abbreviation | Default Endpoint (Upload/Download/Management) | ||
Chinese mainland | Public cloud regions | Beijing Zone 1 (sold out) | ap-beijing-1 | <BucketName-APPID>.cos.ap-beijing-1.myqcloud.com |
| | Beijing | ap-beijing | <BucketName-APPID>.cos.ap-beijing.myqcloud.com |
| | Nanjing | ap-nanjing | <BucketName-APPID>.cos.ap-nanjing.myqcloud.com |
| | Shanghai | ap-shanghai | <BucketName-APPID>.cos.ap-shanghai.myqcloud.com |
| | Guangzhou | ap-guangzhou | <BucketName-APPID>.cos.ap-guangzhou.myqcloud.com |
| | Chengdu | ap-chengdu | <BucketName-APPID>.cos.ap-chengdu.myqcloud.com |
| | Chongqing | ap-chongqing | <BucketName-APPID>.cos.ap-chongqing.myqcloud.com |
| Finance cloud regions | Shenzhen Finance | ap-shenzhen-fsi | <BucketName-APPID>.cos.ap-shenzhen-fsi.myqcloud.com |
| | Shanghai Finance | ap-shanghai-fsi | <BucketName-APPID>.cos.ap-shanghai-fsi.myqcloud.com |
| | Beijing Finance | ap-beijing-fsi | <BucketName-APPID>.cos.ap-beijing-fsi.myqcloud.com |
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Outside Chinese mainland
Region | | | Region Abbreviation | Default Endpoint (Upload/Download/Management) |
Asia Pacific | Public cloud regions | Hong Kong (China) | ap-hongkong | <BucketName-APPID>.cos.ap-hongkong.myqcloud.com |
| | Singapore | ap-singapore | <BucketName-APPID>.cos.ap-singapore.myqcloud.com |
| | Jakarta | ap-jakarta | <BucketName-APPID>.cos.ap-jakarta.myqcloud.com |
| | Seoul | ap-seoul | <BucketName-APPID>.cos.ap-seoul.myqcloud.com |
| | Bangkok | ap-bangkok | <BucketName-APPID>.cos.ap-bangkok.myqcloud.com |
| | Tokyo | ap-tokyo | <BucketName-APPID>.cos.ap-tokyo.myqcloud.com |
North America | | Silicon Valley (US West) | na-siliconvalley | <BucketName-APPID>.cos.na-siliconvalley.myqcloud.com |
| | Virginia (US East) | na-ashburn | <BucketName-APPID>.cos.na-ashburn.myqcloud.com |
South America | | São Paulo | sa-saopaulo | <BucketName-APPID>.cos.sa-saopaulo.myqcloud.com |
Europe | | Frankfurt | eu-frankfurt | <BucketName-APPID>.cos.eu-frankfurt.myqcloud.com |
Default Domain Name Usage Example
Assume that you have logged in to the COS console as the root account (
APPID is 1250000000) and created a bucket named examplebucket in the Guangzhou region, the default endpoint of the bucket will be:examplebucket-1250000000.cos.ap-guangzhou.myqcloud.com
Note:
examplebucket-1250000000: indicates that the bucket is owned by the user whose
APPID is 1250000000. APPID is a fixed and unique ID assigned by the system when you successfully applied for the Tencent Cloud account. You can view it at Account Information.cos: Cloud Object Storage (COS)
ap-guangzhou: abbreviation of the bucket region
myqcloud.com: indicates Tencent Cloud domain (fixed)
If you store an image (picture.jpg) to the created bucket, the access URL of the image will be:
examplebucket-1250000000.cos.ap-guangzhou.myqcloud.com/picture.jpg
Note:
If you set the image access permission to public-read/private-write, paste the image access URL into the browser to view the image detail.
To replace the bucket's default domain name with your own domain name, please see enable custom origin site domain.
To accelerate access to COS resources using a custom domain name, you can enable CDN acceleration for the domain. See enable custom CDN acceleration domain.
Global Acceleration Domain
Tencent Cloud Object Storage (COS) global acceleration leverages Tencent's global traffic scheduling load balancing system. Intelligent routing resolves user requests, selects the best network access linkage, and implements nearby access to accelerate data upload and download. For details on global acceleration domain names and usage examples, see Global Acceleration Overview and Private Network Global Acceleration.
The global acceleration domain name format is:
<BucketName-APPID>.cos.accelerate.myqcloud.com.The private network global acceleration domain name format is:
<BucketName-APPID>.cos-internal.accelerate.tencentcos.cn.Private Network and Public Network Access
On Cloud Virtual Machine (CVM), accessing files via the COS default domain name within the same region enables private network access. At this point, both upload and download generate private network traffic, which will not incur traffic charges. However, request count fees still apply.
If you deploy CVM service on Tencent Cloud for private network access to COS, first ensure the CVM and COS bucket are in the same region. Then use the
nslookup command on CVM to resolve the COS domain name. If a private IP is returned, it indicates access between CVM and COS is over the private network; otherwise, it is over the public network. For details about private and public network access, see the Private Network Access document.If the CVM service you deployed on Tencent Cloud is in a different region from the COS bucket but within the COS available region scope, you can access files via the COS private network global acceleration domain to achieve cross-region access between CVM and COS. For details, see Private Network Global Acceleration.
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