The server's IP address (IPv4 or IPv6).
The server's port. Port value must be a value of 53, otherwise omit the port value. Note: Numbers greater than Number.MAX_SAFE_INTEGER will result in rounding issues.
The OCID of the TSIG key. A TSIG key is used to secure DNS messages (in this case, zone transfers) between two systems that both have the (shared) secret.
External downstream nameserver for the zone. This field is currently not supported when {@code zoneType} is {@code SECONDARY} or {@code scope} is {@code PRIVATE}.