The ZoneCheck/ZoneMaster tool performs several tests on your domain to ensure that it is properly configured and can be safely delegated to your nameservers.
For many registries, a pre-delegation test is performed prior to name server registrations or changes. That's why we provide this tool to help you set up your domain according to the registry's technical rules.
After performing the test, please correct any fatal errors or contact your system administrator/hosting provider if you do not have the required skills.
Please note that some registries will block your domain name registration if this test is not successfully completed.