User Manual

User’s Guide Troubleshooting
219
nslookup
You can use the nslookup command to determine the IP
address associated with an Internet site name. You specify the
common name, and the nslookup command looks up the name
in on your DNS server (usually located with your ISP). If that
name is not an entry in your ISP’s DNS table, the request is
then referred to another higher-level server, and so on, until the
entry is found. The server then returns the associated IP
address.
On Windows-based computers, you can execute the nslookup
command from the Start menu. Click the Start button, and then
click Run. In the Open text box, type the following:
Nslookup
Click OK. A Command Prompt window displays with a bracket
prompt (>). At the prompt, type the name of the Internet address
that you are interested in, such as www.microsoft.com.
The window will display the associate IP address, if known, as
shown below:
Figure 15: Using the nslookup Utility
There may be several addresses associated with an Internet
name. This is common for web sites that receive heavy traffic;
they use multiple, redundant servers to carry the same
information.
To exit from the nslookup utility, type exit and press [Enter] at
the command prompt.