Synopsis

NSLookup is a simple tool that allows you to look up the IP address of any domain name or server name, as well as find the server name associated with any particular IP address. If a connection to the Internet has been established, just open a command prompt window and type nslookup servername or nslookup ip_address. For example, if you type nslookup 209.204.146.22, you'll see that it corresponds to www.oreilly.com.