The domtools package allows you to traverse DNS domain hierarchies, list all hosts (or subdomains) within a given domain, convert host name to IP address and vice-versa, convert a normal IP address to the "in-addr.arpa." format and vice-versa, and more. These commands can be used manually, or included as building blocks for higher level DNS tools. They generate output that is easily computer parsable.
The domtools package allows you to traverse DNS domain hierarchies, list all hosts (or subdomains) within a given domain, convert host name to IP address and vice-versa, convert a normal IP address to the "in-addr.arpa." format and vice-versa, and more. These commands can be used manually, or included as building blocks for higher level DNS tools. They generate output that is easily computer parsable.