Service category
Alibaba Cloud DNS is available in two types: Hosted Public Zone and Cached Public Zone.
Hosted Public Zone
Hosted Public Zone is a secure, fast, stable, and scalable authoritative Domain Name System (DNS) service. This service helps enterprises and developers convert human-readable domain names into machine-readable IP addresses, and then routes user requests to the required websites or application servers.
Scenarios
Website construction: You can use an A record to map the domain name of a website to the server IP address of the website so that the website is accessible.
Email communication: You can use a mail exchange (MX) record to map a domain name to the IP address of a mail server configured by the email service provider so that the mailbox can send and receive emails.
Business with large volumes of traffic: If multiple servers serve the same business, the weighted round-robin resolution mechanism can be used to allocate traffic to each server so that business loads are balanced across servers.
Cross-network or cross-region access: If users belong to different Internet service providers (ISPs) or are located in different regions, the intelligent DNS resolution feature can be used to intelligently return resolution results based on the geographic locations or network environments of users.
Access acceleration by using the content delivery network (CDN) service: You can map a Canonical Name (CNAME) record to the alias provided by the CDN service provider to improve the response speed or download speed of the website that users access.
Protection against DNS attacks: If your domain name is attacked, the DNS protection feature can be used to prevent business interruption caused by the attack. The capability of advanced DNS attack defense provided by Alibaba Cloud DNS can withstand more than 100 million DNS attacks per second.
Cached Public Zone
Cached Public Zone is an authoritative DNS cache proxy that allows enterprises to use the global DNS service infrastructure provided by Alibaba Cloud DNS without the need to migrate data from their original DNS systems. This helps enterprises improve the service capabilities of IPv6 compliance transformation, DNS security protection, DNS access speeds, and DNS server backup.
Scenarios
IPv6 compliance transformation: The Cached Public Zone service allows you to quickly complete IPv6 compliance transformation without the need to migrate DNS data. Anti-DDoS security protection: DNS responses are cached to hide your on-premises authoritative DNS servers. This protects your on-premises authoritative DNS servers from distributed denial of service (DDoS) attacks and reduces the loads on these servers. DNS access acceleration: Alibaba Cloud DNS provides global nodes. The Cached Public Zone service allows you to access the nearest node and accelerates the access without the need to reconstruct your on-premises DNS. Backup for DNS servers: If an error occurs in your authoritative DNS server, the Cached Public Zone service allows you to use the service before the cached DNS records expire. This shortens the time wasted by the error. Cost-effectiveness: When you use an on-premises DNS server, the Cached Public Zone service caches your DNS records on Alibaba Cloud nodes. This reduces bandwidth usage, accelerates access, implements rapid scale-out, and therefore saves costs.
Purchase the service
Click here to go to the buy page of Alibaba Cloud DNS. Then, click Hosted Public Zone or Cached Public Zone.
Select an appropriate service edition and features based on your business requirements, click Buy Now in the lower-right corner, and then complete the payment.
The Hosted Public Zone service is available in different editions. For more information about how to select an appropriate service edition and features, see Editions.
Bind a domain name
Hosted Public Zone
After you purchase a paid edition of Hosted Public Zone, the system automatically generates a DNS instance under your account. You can use the features of paid Alibaba Cloud DNS only after your domain name is bound to the DNS instance.
Log on to the Alibaba Cloud DNS console.
On the Authoritative DNS Resolution page, click the Editions tab. In the Actions column of the DNS instance, click Bind Domain Name.
In the Basic Information section on the Bind Domain Name page, enter the domain name that you want to bind and click Bind Domain Name. If the DNS instance that you purchased supports multiple domain names, you can enter all of these domain names in the Basic Information section and bind them to the DNS instance.
In the Bind Domain Name section on the Bind Domain Name page, view the domain names that are bound to the DNS instance.
Cached Public Zone
After you purchase the Cached Public Zone service, the system automatically generates a Cached Public Zone instance under your account. You can use the Cached Public Zone service only after your domain name is bound to the Cached Public Zone instance.
Log on to the Alibaba Cloud DNS console.
On the Authoritative DNS Resolution page, click the Editions tab. In the Actions column of the Cached Public Zone instance, click Bind Domain Name.
On the Cache-accelerated Domain Names tab, click Add Cache-accelerated Domain Name.
In the Add Cache-accelerated Domain Name pane, select the ID of the Cached Public Zone instance from the Service Instance drop-down list and click OK to bind the instance to the domain name.
