http://www.webreference.com/cgi-bin/nslookup.cgi
http://www.bankes.com/nslookup.htm
http://network-tools.com/nslook/
http://www.kloth.net/services/nslookup.php
http://dns411.com/
http://www.zoneedit.com/lookup.html
http://centralops.net/co/NsLookup.vbs.asp
http://www.channel1.com/cgi-bin/nslookup.cgi
http://www.subnetonline.com/cgi-bin/webtools/nslookup.pl
http://networking.ringofsaturn.com/Tools/nslookup.php
http://www.webmaster-toolkit.com/ns-lookup.shtml
http://www.simplelogic.com/net_utils/NsLookup.asp
http://helpy.com.ar/NSLookup.php
http://helios.ccunix.ccu.edu.tw/cgi-bin/nslookup.cgi
http://www.tellurian.com/scripts/tools/nslookup.asp
http://www.tti.co.jp/nslookup/i/
http://www.nsg.northwestern.edu/cgi-bin/nslookup.cgi
http://www.his.com/cgi-bin/nslookup
http://www.enc.com.au/itools/nslookup.php