Help Center/ Anti-DDoS Service/ User Guide/ Advanced Anti-DDoS User Guide/ Managing Domain Names/ Modifying Resolution Lines for High-Defense IP Addresses of a Domain Name
Updated on 2025-08-20 GMT+08:00
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Modifying Resolution Lines for High-Defense IP Addresses of a Domain Name

After your service is connected to AAD, you can change the high-defense IP resolution line to change the resolution line of the corresponding domain name.

  • Modifying the resolution configuration for high-defense IP addresses could cause protection failures or service disruptions. To mitigate this risk, update the configuration only after ensuring the new configuration has been validated.
  • If you cannot evaluate the risks, submit a service ticket for consultation.

Limitations and Constraints

The change takes effect in about five minutes.

Changing the Resolution Line for a Domain Name

  1. Log in to the AAD console.
  2. In the navigation pane on the left, choose Advanced Anti-DDoS > Domain Name Access. The Domain Name Access page is displayed.

    Figure 1 Domain name access

  3. In the row containing the desired domain name, click View details in the Instance and Line column.
  4. Modify the resolution lines for the domain name.

    • Disable DNS resolution for a high-defense IP address of the domain name.

      On the line details page, change Line Resolution to for the line to be disabled to disable domain name resolution for the high-defense IP address of the AAD instance and line. After you disable DNS resolution, you can still use the A record for the high-defense IP address.

    • Add a resolution line for the domain name.
      1. On the line details page, click Add Instance Line.
      2. In the Add Instance Line dialog box, select instances and lines and click OK.
      3. Set Line Resolution Switch to to enable DNS resolution for the high-defense IP addresses.
    • Delete a resolution line for the domain name.
      1. Close the line to be deleted.
      2. Locate the row that contains the disabled line, and click Delete Line.
      3. Click OK.
    • Export all rules.

      On the line details page, click Export All to export all forwarding rules of the domain name.

Parent Topic: Managing Domain Names