Rule: The DIG command does not use resolver caching.
If you have a group of queries to be resolved, you must issue an NSLOOKUP command for each query. Compared to NSLOOKUP, the DIG command provides a larger range of options for controlling queries and screen output.
The TSO DIG command has been deprecated in favor of the z/OS® UNIX dig command. TSO DIG will not understand some of the newer resource record types, including many types of IPv6 data.