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PTR Records

Pointer records are used to map a network interface (IP) to a hostname for a Reverse DNS configuration. PTR records are configured within Reverse DNS domains (in-addr.arpa) domains.

Before you set up your PTR records, you should first go through the Reverse DNS tutorial and set up Reverse DNS domains on Constellix name servers.

1. Select your Domain

A. Select Managed DNS
B. Select Domains from the dropdown

C. Select the reverse zone you want to add a PTR record too.

2. Select PTR Record

Under the PTR Records section, click on the (+) icon to add a record.

3. Enter Record Values

A. Name: The last octet of the IP address you are configuring reverse DNS for.
B. TTL: Time to Live, measured in seconds, determines how long the record is cached in resolvers. For more information on best practices for TTLs, click here.
C. Disable Record: Information on the NX Domain feature can be found in the Disabling a Record tutorial.

D. System: This will be the host name of the computer or server the IP resolves too, for example mail.example.com. It is important to note, the domain name is automatically appended to the end of this field unless it ends with a dot (.).

E. Notes: Add a helpful note with keywords so you can search for your records later.
F. Save: Save your record changes and don’t forget to commit your changes after you’re done making record changes for this domain!

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