User Commands for Domain Name Resolution

cutncurl[sys4]: dig ns exnet.com @a.root-servers.net

• Response

;;ANSWERS:
ns.exnet.com.	172800 		NS 	ns.exnet.com.
ns.exnet.com.	172800		NS	ns.exweb.com.
ns.exnet.com.	172800 		NS	ns3.exnet.com.

• Inverse Mapping Query

cutncurl[sys4]: dig -x 192.135.233.213
    or:
cutncurl[sys4]: dig ptr 213.233.135.192.in-addr.arpa

• Response

;;ANSWERS:
213.233.135.192.in-addr.arpa. 73110  PTR   dannii.dcs.qmw.ac.uk.