Delegating a Public DNS Zone
In this step, delegate the domain with a registrar. Delegating a domain with the domain's registrar makes the OCI hosted zone accessible through the internet.
See Overview of DNS and Public DNS for more information.
Using the Console
Using the Domain Information Groper (dig) command line tool, you can test against the delegation where the domain is hosted, and you can immediately see whether the change took place without accounting for the cache or TTL (Time to Live) that you have configured.
For more information on using dig to test DNS, see Testing DNS Using BIND'S dig Tool.