On this page

Scenarios
Constraints
Recursive Resolution Example of a Subdomain in a Private Zone
Enabling Recursive Resolution for Subdomains

Show all

Help Center/ Domain Name Service/ User Guide/ Private Zones/ Configuring Recursive Resolution for Subdomains

Configuring Recursive Resolution for Subdomains

Updated on 2025-02-28 GMT+08:00

View PDF

Scenarios

You can enable the recursive resolution proxy option for private zones.

After this option is enabled, if no record sets are configured for the subdomain, the DNS service does not directly return nxdomain (which means that no record sets are configured). Instead, the DNS queries are forwarded to the Internet for resolution.

Constraints

Private recursive DNS server does not return the resolution result based on DNS Resolver endpoint rules.

Recursive Resolution Example of a Subdomain in a Private Zone

For example.com, the following record sets have been added to the private zone:

**Table 1** Record sets
Name	Type	Value
a1	A	1.2.3.4

When you access a1.example.com, the DNS server returns 1.2.3.4 based on the configured private zone record set.

When you access www.example.com, no record sets are configured in the private zone. In this case, the authoritative DNS server resolves the domain name and returns the result.

Enabling Recursive Resolution for Subdomains

You can enable recursive subdomain resolution when creating or modifying a private zone.

Enabling recursive subdomain resolution when creating a private zone
When creating a private zone, you can select Recursive resolution proxy for subdomains to enable recursive subdomain resolution.

For details about how to create a private zone, see Creating a Private Zone.

Figure 1 Enabling recursive subdomain resolution when creating a private zone
Enabling recursive subdomain resolution when modifying a private zone
When modifying a private zone, you can select Recursive resolution proxy for subdomains to enable recursive subdomain resolution.

For details about how to modify a private zone, see Managing Private Zones.

Figure 2 Enabling recursive subdomain resolution when modifying a private zone