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Alibaba Cloud DNS:Public Authoritative DNS Resolution

Last Updated:Jul 17, 2024


Public Authoritative DNS Resolution is an authoritative Domain Name System (DNS) service that is secure, fast, stable, and scalable. This service can route user requests to desired websites or application servers in a convenient manner.


  • High stability

Public authoritative DNS servers around the world back up each other to deliver Service Level Agreement (SLA)-guaranteed availability of 100%. Network-wide data is synchronized and updated in a timely manner to ensure data consistency.

  • High security

With more than 10 Tbit/s bandwidth and multiple large traffic scrubbing centers around the world, Public Authoritative DNS Resolution can defend against DDoS attacks of over 100 million DNS requests per second.

  • Fast speed

Public authoritative DNS servers are deployed around the world. This accelerates DNS resolution and reduces resolution latency because DNS requests are routed to the nearest DNS servers available.


Public Authoritative DNS Resolution is available in the following nodes: US (Virginia), US (Silicon Valley), Indonesia (Jakarta),Malaysia (Kuala Lumpur) , Australia (Sydney), Singapore, Japan (Tokyo), SAU (Riyadh - Partner Region), UAE (Dubai)Germany (Frankfurt), UK (London), Thailand (Bangkok), South Korea (Seoul), Philippines (Manila), Hong Kong (China), China (Beijing), China (Shanghai), China (Shenzhen), China (Hangzhou), China (Qingdao), and China (Chengdu).

  • High performance

Public Authoritative DNS Resolution can deliver thousands of domain name changes to global nodes within 1 second, and can process more than 100 billion DNS requests per day.


Public Authoritative DNS Resolution consists of the control layer and the resolution layer.

  • Control layer: The control layer provides services for customers by using the console and API operations. The control layer allows customers to add, delete, modify, query, and save Domain Name System (DNS) resolution data, configuration data, and log data. The control layer is located in the China (Zhangjiakou) region.

  • The resolution layer provides services by using the DNS server clusters that are deployed around the world. The resolution layer receives the DNS record data distributed from the control layer and responds to the queries for the DNS record data. The resolution layer covers the major continents and regions around the world.

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