Alternative to DomainTools Reverse Who Is?

[domain]

Hi there, Are there any free alternatives to domaintools reverse whois look-up? I want to find out what domain names a particular end-user owns. According to domaintools.com, they own 16 domains but which ones? I did a search through past threads but the ones suggested don't do the job I...

[sanjai]

Hi i have no idea about the site alternative to domaintools.com to do reverse whois look up .But i have found many site similar to domaintools.com its named as Whoisxy.com here they provide whois search tool using which you can do whois search for domain and Ip address .They are also providing domain to ip,ip to domain,ping test tool..................