NSLOOKUP
nslookup is a useful software tool which enables a name server to be queried directly, and for any DNS information to be returned. This enables one to determine if a server is up, working properly, is properly configured, or for returning remote server information.
nslookup is frequently run from the command line, in this form:
nslookup domain-name
however it can be run in a more powerful, interactive mode aswell. From the
command line, a typical use would be as follows:
e.g.
> nslookup aaa.bbb.comServer: ccc.bbb.com
Address: 127.0.0.1
References
- TCP/IP Network Administration - Craig Hunt - O'Reilly & Associates, Inc - ISBN: 0-937175-82-X
- Getting Connected: the Internet at 56K and Up - Kevin Dowd - O'Reilly & Associates, Inc- ISBN: 1-56592-203-4
- Practical UNIX and Internet Security - Simson Garfinkel & Gene Spafford - O'Reilly & Associates, Inc - ISBN: 1-56592-148-8