This topic describes the regions and zones that are supported by Application Load Balancer (ALB).
Regions and zones
Regions are geolocations of data centers. After you create a cloud resource, you cannot change the region in which the cloud resource is deployed. A region consists of multiple isolated locations known as zones. Each zone has its own independent power supply and networks.
Zones within the same region can communicate with each other over an internal network. Fault isolation can be enabled between zones. When one zone is down, other zones in the same region are not affected. Regions are independent of each other. Zones are isolated from each other. The network latency between zones within the same region is low.
To provide more stable and reliable load balancing services, ALB distributes requests across multiple zones and supports real-time disaster recovery. If one zone is down, ALB distributes requests to other zones.
Regions and zones that support ALB
The regions and zones that support ALB in the following table are for reference only. For more information, visit the buy page.
Area | Region | Zone |
China | China (Hangzhou) | Zone G, Zone H, Zone I, Zone J, and Zone K |
China (Shanghai) | Zone B, Zone D, Zone E, Zone F, Zone G, Zone L, Zone M, and Zone N | |
China (Shenzhen) | Zone D, Zone E, and Zone F | |
China (Chengdu) | Zone A and Zone B | |
China (Qingdao) | Zone B and Zone C | |
China (Beijing) | Zone G, Zone H, Zone I, Zone J, and Zone K | |
China (Zhangjiakou) | Zone A, Zone B, and Zone C | |
China (Ulanqab) | Zone A and Zone B | |
China (Hong Kong) | Zone B, Zone C, and Zone D | |
China (Guangzhou) | Zone A and Zone B | |
Asia Pacific | Singapore | Zone A, Zone B, and Zone C |
Malaysia (Kuala Lumpur) | Zone A and Zone B | |
Australia (Sydney) | Zone A and Zone B | |
India (Mumbai) | Zone A and Zone B | |
Japan (Tokyo) | Zone A, Zone B, and Zone C | |
Indonesia (Jakarta) | Zone A, Zone B, and Zone C | |
South Korea (Seoul) | Zone A | |
Philippines (Manila) | Zone A | |
Thailand (Bangkok) | Zone A | |
Europe & Americas | UK (London) | Zone A and Zone B |
Germany (Frankfurt) | Zone A, Zone B, and Zone C | |
US (Virginia) | Zone A and Zone B | |
US (Silicon Valley) | Zone A and Zone B | |
Middle East | SAU (Riyadh) | Zone A and Zone B |
Regions that support specific ALB features
Regions that support dual-stack ALB instances
Geographic location | Alibaba Cloud region |
China | China (Hangzhou), China (Shanghai), China (Shenzhen), China (Chengdu), China (Qingdao), China (Beijing), China (Zhangjiakou), China (Ulanqab), China (Hong Kong), and China (Guangzhou) |
Asia Pacific | Singapore |
Europe and Americas | Germany (Frankfurt) and US (Virginia) |
For more information, see Protocol versions.
Regions that support WAF-enabled ALB instances
Area | Region |
China | China (Chengdu), China (Qingdao), China (Beijing), China (Guangzhou), China (Hangzhou), China (Ulanqab), China (Shanghai), China (Shenzhen), China (Zhangjiakou), and China (Hong Kong) |
Asia Pacific | Philippines (Manila), Indonesia (Jakarta), Japan (Tokyo), Malaysia (Kuala Lumpur), Australia (Sydney), Singapore, and India (Mumbai) |
Europe & Americas | Germany (Frankfurt), US (Silicon Valley), and US (Virginia) |
Middle East | SAU (Riyadh) |
For more information, see Activate and manage WAF-enabled ALB instances.
Regions that allow you to associate Anycast EIPs with ALB instances
Area | Region |
China | China (Hong Kong) |
Asia Pacific | South Korea (Seoul), Japan (Tokyo), Indonesia (Jakarta), Philippines (Manila), Singapore, Malaysia (Kuala Lumpur), India (Mumbai), and Thailand (Bangkok) |
Europe and Americas | UK (London), US (Virginia), US (Silicon Valley), and Germany (Frankfurt) |
By default, you cannot associate Anycast EIPs with an ALB instance. To use this feature, log on to the Quota Center console, go to the Privileges page, enter the quota ID
slb_user_visible_gray_label/anycast_eip, and then click Apply. For more information, see Manage ALB quotas.For more information, see Associate Anycast EIPs with ALB instances.
Regions that allow you to add Elastic Compute Service (ECS) instances in a different region to an ALB instance
Area | Region |
China | China (Chengdu), China (Qingdao), China (Beijing), China (Guangzhou), China (Hangzhou), China (Ulanqab), China (Shanghai), China (Shenzhen), China (Zhangjiakou), and China (Hong Kong) |
Asia Pacific | Indonesia (Jakarta), Japan (Tokyo), Malaysia (Kuala Lumpur), Australia (Sydney), Singapore, and India (Mumbai) |
Europe & Americas | Germany (Frankfurt), UK (London), US (Virginia), and US (Silicon Valley) |
References
DescribeRegions: queries available regions.
DescribeZones: queries the zones in a region.