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Oracle Cloud Infrastructure (OCI) DNS is a highly scalable, global anycast domain name system (DNS) network that assures high site availability and low latency, resulting in a superior end user experience when connecting to Oracle Cloud Infrastructure, third-party, and private assets. By configuring Oracle DNS, enterprise and business customers can connect their DNS queries to assets such as Oracle Cloud Infrastructure Compute and Storage, as well as to third-party and private assets. Customers can also manage DNS records, which are domain names mapped to IP addresses; domain names can be cloud or non cloud resources.
Oracle Cloud Infrastructure DNS is an established, industry-leading solution. Some of the key benefits include:
Oracle Cloud Infrastructure DNS service may be used when:
A DNS domain is simply the name given to translate a corresponding IP address, such as example.com. A DNS zone is where DNS records for a specific DNS domain are kept.
Customers can contact MOS (My Oracle Support) through the Oracle Cloud Infrastructure Portal.
Oracle Cloud Infrastructure DNS offers a complete set of functions for zone management within the user interface. The following functions are available:
Currently, Oracle Cloud Infrastructure DNS supports the following DNS records:
In addition, Oracle Cloud Infrastructure DNS supports an ALIAS record type which is specific to Oracle Cloud Infrastructure DNS. It can be used to map to various Oracle Cloud Infrastructure services (Compute, Network, Database or Storage), third-party or private assets. The ALIAS record acts is similar to a CNAME record, with the difference being they can be at the 'apex' record of a Zone and is not visible to external resolvers, ALIAS record types support only A and AAAA queries. Any DNS query is resolved to the mapped asset. If example.com is queried, the ALIAS record would resolve to the mapped asset (for example, the Oracle Cloud Infrastructure Compute asset). ALIAS records also help by not having to map a record to a specific IP address as IP addresses associated with certain assets could dynamically change due to various conditions.
Oracle Cloud Infrastructure DNS service supports up to 1000 zones per tenant. More zones can be added by contacting Oracle Support.
The Oracle Cloud Infrastructure DNS service by default supports up to 25,000 resource records per zone. Contact Oracle Support if more records are needed.
The Oracle Cloud Infrastructure DNS Network supports 18 anycast POPs distributed around North America, South America, Europe, and Asia Pacific.
An anycast network utilizes the same IP address for all of the DNS servers in the network. This means that the DNS server in South America has the same IP address as the DNS server in Asia. When a DNS query is sent, even though all the DNS servers have the same IP address, the request is sent to a specific DNS server based on routing protocol, network health, and proximity to the servers location, etc. The anycast network provides lower latency, a basic level of load-balancing, and resiliency to be able to handle outages or heavy traffic with minimal impact to the customer.
Secondary DNS operates in an “always on” manner to supplement your existing primary DNS infrastructure to increase the availability of name resolution. When an end user’s recursive server initiates a DNS request, both the existing DNS service and the secondary DNS will respond as soon as they receive the request. Whichever response reaches the recursive server first will be passed back to the end user, completing their request. This process effectively creates a race to respond to each incoming DNS request, ensuring performance can only improve. All domain information will continue to be managed within the primary DNS service in the same manner in which this information is configured today. This information will then be synchronized with the secondary service using standard protocols (Notify, IXFR, AXFR) to ensure both solutions are returning the same information to end users.
Oracle Cloud Infrastructure DNS zones may be configured as Secondary zones today. External name servers are not currently supported for secondary DNS.
Yes. We deliver a minimum of 99.95 percent availability, consistent with other Oracle Cloud Infrastructure services.
Oracle Cloud Infrastructure DNS will soon support traffic management capabilities to steer DNS traffic with capabilities such as active failover, ratio load balancing and geolocation, ASN, and IP Prefix steering.
Oracle Cloud Infrastructure DNS is available to Universal Cloud Credit subscribers. Universal Cloud Credit subscribers can access Oracle Cloud Infrastructure DNS via the Oracle Cloud Infrastructure Console under the networking tab. From the DNS Zones page, customers can begin to add the needed zones and records.
Oracle Cloud Infrastructure DNS offers an easy to use graphical user interface, CLI, comprehensive REST APIs, and SDKs.
Oracle Cloud Infrastructure DNS supports SDKs for Java, Python and Ruby, as well as an API. The SDKs and API support full zone and record management capabilities.
Yes, Zone export is supported by many DNS vendors and systems. A downloaded/exported file can be imported using the Oracle Cloud Infrastructure user interface or the REST API.
Domains can be delegated to Oracle Cloud Infrastructure DNS from the Domain Registrar’s self-service portal.
Yes, in most cases. Restrictions are related to which third-party DNS vendor is acting as primary. Some of the larger cloud providers offering DNS service do not support this capability. Please contact Oracle Cloud Infrastructure DNS support for details.
Yes. Other vendor DNS solutions may be used as secondary DNS with the Oracle Cloud Infrastructure DNS as primary for higher service availability if required.
No, currently Domain Name System Security Extension (DNSSEC) is not supported at this time.
Yes. Oracle Cloud Infrastructure DNS supports zones with AAAA records, and name servers listen on both IPv4 and IPv6 addresses.
Yes. At this time counts for total queries and queries per zone are supported.
Yes. Customers may purchase Oracle Cloud Infrastructure private pool and vanity name servers to have their domain names and zones under a private IP pool with dedicated name servers to segregate from those of other customers in order to reduce the risk of external issues affecting their websites.
Yes. Customers may purchase private pool and vanity name servers to rebrand the Oracle Cloud Infrastructure name servers with their own naming in order to gain flexibility and consistency across their online assets.
Yes. Oracle Cloud Infrastructure DNS is available to Universal Cloud Credit subscribers. Customers may choose to only leverage only Oracle Cloud Infrastructure DNS.
OCI Private DNS is available in all OCI Realms and Regions.
There is no charge for Private DNS. Private DNS zones, queries, and resolver endpoints are free.
A Custom Private Zone is a customer-created zone. Customers have full control of naming and record management.
A Protected Private Zone is an OCI system-generated zone (for example, oraclevcn.com) that customers are limited to read only access. Zone lifecycle is controlled by the OCI system.
A view is a logical grouping of Private DNS zones for ease of management. A zone can only exist in a single view. Note that the same zone name may be used in different views, each with unique records, but duplicate zone names cannot exist within the same view.
A Private DNS Resolver is a resolver within a VCN for resolving private DNS queries.
An interface on a Private DNS Resolver with a unique IP address for receiving queries from another VCN or on-premises DNS for resolution.
An interface on a Private DNS Resolver with a unique IP address that is used to forward queries to another VCN or on-premises DNS for resolution.
Rules used to specify conditional forwarding logic on a Private DNS Resolver to forward queries to another VCN, a customer's on-premises network, or another private network for DNS resolution.
The Private DNS Resolver supports the following conditional forwarding rules:
In order to forward or receive queries from another Private DNS network (another VCN, on-premises network, or another private network) network connectivity must be established. For VCN to VCN DNS resolution, customers may use a local peering gateway for VCNs in the same region or a remote peering gateway for VCNs in different regions. For on-premises or other private network, Fast Connect or a IPSec VCN may be used. Note that DNS runs over DHCP, so this protocol must be enabled on the connection.
Yes. When a VCN is created, a Private DNS Resolver and a default Private View will be created for the VCN. Customer can immediately create private zones and records for the resolver.
Nothing. The existing VCNs have been backfilled with the new resolver and view at the time of General Availability.
Yes, Within the same region, views may be associated with multiple resolvers.
The following record types are supported for OCI Private DNS: