This topic describes the regions and availability zones (AZs) supported by Network Load Balancer (NLB).
Regions and availability zones
A region is a geographic area with Alibaba Cloud data centers. You cannot change a resource's region after creation. An availability zone is a physically isolated location within a region that has independent power and networking.
Availability zones within the same region are interconnected over a low-latency internal network. This design provides fault isolation. If one availability zone fails, other availability zones in the same region continue to operate normally. Regions are completely independent of each other, and availability zones in different regions are fully isolated.
To provide a stable and reliable load balancing service, NLB distributes traffic across multiple availability zones. This feature lets you build cross-zone disaster recovery for your applications. If an availability zone fails, NLB automatically forwards traffic to healthy availability zones to ensure business continuity.
NLB regions and availability zones
The regions and availability zones supported by NLB in the following tables are for reference only. For the most up-to-date information, see the buy page.
Area | Region | Availability zones |
China | China (Hangzhou) | Zone B, Zone G, Zone J, Zone K, Zone I, Zone H |
China (Shanghai) | Zone B, Zone C, Zone D, Zone E, Zone F, Zone G, Zone L, Zone M, Zone N | |
China (Shenzhen) | Zone C, Zone D, Zone E, Zone F | |
China (Heyuan) | Zone A, Zone B, Zone C | |
China (Guangzhou) | Zone A, Zone B | |
China (Qingdao) | Zone B, Zone C | |
China (Beijing) | Zone D, Zone F, Zone G, Zone H, Zone I, Zone J, Zone K, Zone L | |
China (Zhangjiakou) | Zone A, Zone B, Zone C | |
China (Ulanqab) | Zone A, Zone B, Zone C, Zone D | |
China (Chengdu) | Zone A, Zone B, Zone C | |
China (Zhongwei) | Zone A, Zone B | |
China (Hong Kong) | Zone B, Zone C, Zone D | |
Asia Pacific | Philippines (Manila) | Zone A, Zone B |
Thailand (Bangkok) | Zone A, Zone B | |
Singapore | Zone A, Zone B, Zone C | |
Japan (Tokyo) | Zone A, Zone B, Zone C, Zone D, Zone E | |
South Korea (Seoul) | Zone A, Zone B | |
Malaysia (Kuala Lumpur) | Zone A, Zone B, Zone C | |
Malaysia (Johor Bahru) | Zone A, Zone B | |
Indonesia (Jakarta) | Zone A, Zone B, Zone C | |
Europe and Americas | Germany (Frankfurt) | Zone A, Zone B, Zone C |
UK (London) | Zone A, Zone B | |
France (Paris) | Zone A, Zone B | |
US (Virginia) | Zone A, Zone B | |
US (Silicon Valley) | Zone A, Zone B | |
Mexico | Zone A, Zone B | |
Middle East | Saudi Arabia (Riyadh) Partner Region | Zone A, Zone B |
UAE (Dubai) | Zone A, Zone B |
NLB instances in the France (Paris) region do not support TCP over SSL (TCPSSL) listeners.
Dual-stack NLB regions
Area | Region |
China | China (Hangzhou), China (Beijing), China (Shenzhen), China (Shanghai), China (Qingdao), China (Zhangjiakou), China (Chengdu), China (Guangzhou), China (Hong Kong), China (Heyuan), China (Ulanqab) |
Asia Pacific | Thailand (Bangkok), Philippines (Manila), Singapore, Japan (Tokyo), South Korea (Seoul), Malaysia (Kuala Lumpur), Indonesia (Jakarta) |
Europe and Americas | Germany (Frankfurt), UK (London), US (Virginia), US (Silicon Valley), Mexico |
Middle East | Saudi Arabia (Riyadh) |
For more information, see Protocol versions.
Related topics
DescribeRegions: Queries the regions where you can create NLB instances.
DescribeZones: Queries the availability zones in a specified region.