How to a domain whether is dropped or not?

I check many domains in

http://www.checkpagerank.net

it is mostly showing forged and some time it shows valid .I am really confused to find the right domain

If you know any best link where i can check the domain before i buy it?

Please help me , ASAP

 

Check here http://www.archive.org/index.php
and http://www.whois.sc

 

Eh thank you but i want to know the Page rank of the domain,,,

checkpagerank.net

for few days his site is not working properly so i am not able to find the page rank,


Please help me if you know any site it will clear to understand...!!!!!

 

digpagerank.com also shows pr...