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Domain Name Service (DNS) provides highly available and scalable authoritative DNS resolution services. It translates domain names like into IP addresses like required for network connection. The DNS service allows users to visit your websites or web applications with domain names.

The DNS service provides the following functions:

  • Public zone
    The DNS service associates public domain names with IP addresses to provide you with forward and reverse resolution services.
    • Forward resolution: to translate domain names of websites or web applications into IP addresses. If not specifically noted, domain name resolution mentioned in this document indicates forward resolution.
    • Reverse resolution: to translate IP addresses into domain names based on PTR records.
  • Private zone

    The DNS service associates private domain names that take effect only within VPCs with private IP addresses to facilitate access to cloud resources within the VPCs.

The DNS service is free and is enabled by default for you.