How to Prevent cPanel Users from Creating Certain Domains

Last modified: July 27, 2023


cPanel & WHM allows you to deny cPanel users the ability to create certain domains or use certain top-level domains (TLDs). This feature is useful, for example, to deny cPanel users the ability to park a well-known domain (such as on top of a domain.

For more information about the domains that cPanel users can create, read our Domains documentation.

Add to the list of user-denied domains

To add to the list of domains that cPanel & WHM does not allow users to create, perform the following steps:

  1. From the command line, run the following command to view the default list of domains that cPanel & WHM does not allow users to create.

    cat /usr/local/cpanel/etc/commondomains
    • If the file contains a large number of entries, run the grep '' /usr/local/cpanel/etc/commondomains command to determine whether the domain exists in the list.

    Do not edit this file directly. System updates overwrite any changes to this file. Instead, follow the next step to create a new file.

  2. With a text editor, add the domains and TLDs that you do not want to allow users to create to the /var/cpanel/commondomains file.

    • Add each domain or TLD on a separate line, and do not prepend or append a dot to the domains. For example:
    • Only add domain names and TLDs to this file (for example, When you list a domain name, cPanel & WHM will automatically prevent the creation of subdomains for that domain or domains under a TLD. For example, if you list the domain, users also cannot create the domain.
  3. In the Domains section of WHM’s Tweak Settings interface (WHM » Home » Server Configuration » Tweak Settings), set the Prevent cPanel users from creating specific domains setting to On.

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