DNS provides domain name resolution services in different network scenarios.

Select a DNS service type based on Table 1.

**Table 1** DNS service types
Type	Scenario	Reference
Public domain resolution	Map domain names to web servers or web applications on the Internet.	Routing Internet Traffic to a Website
Private domain resolution	Map private domain names to private IP addresses within VPCs.	Configuring a Private Zone
Reverse resolution	Obtain public domain names based on IP addresses. PTR records are mainly used to build email servers.	Configuring a PTR Record

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