The dig tool provides easy interactive access to the DNS.The dig tool is available for UNIX and Windows operating systems. It can also be used from the Web. Here are three sites that, at the time of this writing, provided free access to dig:

http://www.gont.com.ar/tools/dig http://www.webmaster-toolkit.com/dig.shtml http://www.webhostselect.com/whs/dig-tool.jsp Use the dig tool to get the list of root servers.