Step 1. Use the Configuration Utility of the router to choose Administration > Diagnostics > Network Tools which opens the Network Tools page.
• WAN (Internet) Name– Enter the name of the server for which the IP address needs to be determined.
Step 2. Click Lookup. If the host or domain entry exists, a response with IP address will appear in a Command Output window. A message stating "Unknown Host" indicates that the specified Internet Name does not exist.