HostInfo 

HostInfo is a software product designed to retrieve domain and network information about internet-hosts and IP addresses (owner name, contact information, DNS servers, etc.).
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Atomic Whois Explorer 

Atomic Whois Explorer is designed to search through global WHOIS database to extract owners' personal data. Current version of the program is capable of retrieving all contact e-mail addresses, phone and fax numbers, country name and expiration dates
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