If you are running xp, what happens if you try
nslookup on an number of domain names randomly (that you know exist)?
How to use NSLookup
For informative purposes only:
Nildran
Primary DNS 195.112.4.4
Secondary DNS 195.112.4.7
Tiscali
Primary DNS 212.74.112.66
Secondary DNS 212.74.112.67
Freeserve
Primary DNS 195.92.195.94
Secondary DNS 195.92.195.95
Edios/Easynet
Primary DNS 195.40.1.36
Secondary DNS 193.131.248.36
Zen:
212.23.8.1
212.23.8.6
Pipex:
NS0-P.DNS.PIPEX.NET
158.43.129.80
NS1-P.DNS.PIPEX.NET
158.43.193.80
BT:
DNS1.BTINTERNET.COM
194.73.73.172
DNS2.BTINTERNET.COM
194.73.73.173
DNS4.BTINTERNET.COM
217.32.252.225
DNS3.BTINTERNET.COM
217.32.252.25
Using another services is essentially illegal becuase you are using their network without authorised permission. I dont claim to know the legality nor condone the use of these DNS servers, purely for diagnostic purposes (which is still questionable).
Dont use the above DNS Servers.
Example nslookup output:
Server: london.sol3.schillernet < Name of the DNS Server
Address: 192.168.0.1
Non-authoritative answer: < Successful response
Name: www.bbc.net.uk
Address: 212.58.224.115
Aliases: www.bbc.co.uk