ZyXEL Communications Prestige 623 series User Manual page 166

Prestige 623 Series Dual-link ADSL Router
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 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 your are interested in, such as www.zyxel.com.
The window will display the associate IP address.
Diagram 2 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.
B Diagnosing Problem Using IP Utilities