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 (http://www.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..................