Oracle Cloud Infrastructure Documentation

Public DNS

Get started with the Oracle Cloud Infrastructure DNS service.

Public DNS zones hold the authoritative DNS records that reside on OCI's nameservers. You can create public zones with publicly available domain names reachable on the internet. For more information, see Overview of DNS.

Service Capabilities and Limits

  • The OCI DNS service is limited to 1000 zones per account and 25,000 records per zone. Customers with zone and record size needs exceeding these values are encouraged to contact support at support.oracle.com.

  • Zone file uploads are limited to 1 megabyte (MB) in size per zone file. If a zone file is larger than 1 MB, you need to split the zone file into smaller batches to upload all the zone information. For more information and a workaround for this limitation, see Zone File Limitations and Considerations.

  • Public DNS zones are only supported in the OC1 commercial realm. For more information and to check if a region is included in OC1, see Regions and Availability Domains.

Setting Up Public DNS

Use these steps to set up public DNS:
  1. Create a public zone
  2. Delegate the zone
  3. Add records to the zone

Public DNS Tasks

See these sections for information on managing DNS resources: