Linux / Unix: Dig Command Find Out TTL (Time to Live) Value For DNS Records

To find out the TTL (Time to Live) value for DNS records using the dig command on a Linux or Unix system, you can use the +time=X option, where X is the desired time in seconds.

For example, to find out the TTL value for the example.com domain, you can use the following command:

dig +time=2 example.com

This will send a DNS query for the example.com domain and display the TTL value for the records in the response.

You can also specify the type of record for which you want to find the TTL value using the type option. For example:

dig +time=2 example.com MX

This will send a DNS query for the MX records of the example.com domain and display the TTL value for the records in the response.

Note: The dig command is a useful tool for troubleshooting and testing DNS configurations. It allows you to send DNS queries and display the responses, including the TTL values of the records. Consult the dig man page or online documentation for a complete list of options and usage examples.