Is there an api to access the dns name of an compute instance

[sivakumarkalluri]

I tried accessing the compute instance using FQDN but not able to connect. Is it possible to access a compute instance on OCI externally via its FQDN?. According to OCI documentation, the FQDN currently resolves to the instance's private IP address. oci fqdn

Does OCI by default provide a dns name such that we can use that for connecting to an instance, like azure and aws provide a public dns name after an instance is created. We would like to know if it possible to access an OCI compute instance via dns name and how can we get that via API or SDK.