Regions and zones in which NLB is available

This topic describes the regions and zones in which Network Load Balancer (NLB) is available.

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. Each region has multiple isolated locations known as zones. Each zone has its own independent power supply and network.

Zones within the same region can communicate with each other over an internal network. Fault isolation can be enabled between zones. If one zone is down, other zones in the same region are not affected. Regions are independent of each other. Zones of different regions are isolated from each other. However, low-latency connections can be established between zones within the same region.

To provide more stable load balancing services, NLB distributes network traffic across specified zones to implement disaster recovery. If one zone is down, other zones take over to maintain service availability.

The following table is for reference only. The information on the buy page of NLB shall prevail.

Area	Region	Zone
China	China (Hangzhou)	Zone G, Zone J, Zone K, Zone I, and Zone H
	China (Shanghai)	Zone B, Zone D, Zone E, Zone F, Zone G, Zone L, Zone M, and Zone N
	China (Shenzhen)	Zone C, Zone D, Zone E, and Zone F
	China (Heyuan)	Zone A and Zone B
	China (Guangzhou)	Zone A and Zone B
	China (Qingdao)	Zone B and Zone C
	China (Beijing) region	Zone F, Zone G, Zone H, Zone I, Zone J, Zone K, and Zone L
	China (Zhangjiakou)	Zone A, Zone B, and Zone C
	China (Ulanqab)	Zone A, Zone B, and Zone C
	China (Chengdu)	Zone A and Zone B
	China (Hong Kong)	Zone B, Zone C, and Zone D
Asia Pacific	Philippines (Manila)	Zone A
	Thailand (Bangkok)	Zone A
	Singapore	Zone A, Zone B, and Zone C
	Japan (Tokyo)	Zone A, Zone B, and Zone C
	South Korea (Seoul)	Zone A
	Malaysia (Kuala Lumpur)	Zone A and Zone B
	Indonesia (Jakarta)	Zone A, Zone B, and Zone C
Europe and Americas	Germany (Frankfurt)	Zone A, Zone B, and Zone C
	UK (London)	Zone A and Zone B
	US (Virginia)	Zone A and Zone B
	US (Silicon Valley)	Zone A and Zone B
Middle East	SAU (Riyadh - Partner Region)	Zone A and Zone B

Regions that support dual-stack

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), China (Nanjing - Local Region), China (Wuhan - Local Region), and China (Fuzhou - Local Region)
Asia Pacific	Thailand (Bangkok), Philippines (Manila), Singapore, Japan (Tokyo), South Korea (Seoul), Malaysia (Kuala Lumpur), and Indonesia (Jakarta)
Europe and Americas	Germany (Frankfurt), UK (London), US (Virginia), and US (Silicon Valley).
Middle East	SAU (Riyadh - Partner Region)

Note

For more information, see Protocol versions.

References

DescribeRegions: queries the most recent region list.
DescribeZones: queries the zones in a region.