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Configure subdomain DNS records

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This topic explains how to add DNS records for a subdomain in different business scenarios.

Procedure

For example, your primary domain isexample.com, and you want to configure a DNS record for the subdomainabc.example.com.

Scenario 1: Manage domains together

Steps

  1. Add the primary domain: On the Authoritative Domain Names page of the Alibaba Cloud DNS console, add the primary domainexample.com.

  1. Add a DNS record: On the DNS Settings page of the primary domain, add a DNS record. Set Hostname to abc. For details on the other parameters, see Add a DNS record.

Note

A DNS record is for a subdomain if its hostname is set to a value other than @.

Scenario 2: Manage domains separately

  • Your primary domain is hosted by a third-party DNS provider, and you need to migrate only your subdomains to Alibaba Cloud DNS.

  • In large enterprises, headquarters often manages the primary domain, while branch offices require independent management of their subdomains.

  • Government agencies or financial institutions with self-managed DNS can delegate subdomain management to Alibaba Cloud DNS to reduce high operating and maintenance costs.

Steps

  1. Add the subdomain: On the Authoritative Domain Names page of the Alibaba Cloud DNS console, add the domainabc.example.com. For more information, see Subdomain Management.

  1. Add a DNS record: On the DNS Settings page of the domain, set Hostname to @. For details on the other parameters, see Add a DNS record.

Note

If you configure DNS records for a subdomain using both scenarios, the Scenario 2 records take precedence. This occurs because records for an explicitly added subdomain are prioritized over those configured under its primary domain.