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Here some word from netsol.com,

"Find out who registered a domain name and view additional registration and Web site data with Network Solutions enhanced WHOIS database. WHOIS allows you to search across multiple registrar databases to give you registration information on millions of domain names, regardless of where they are registered.

Our comprehensive WHOIS search results report gives you registration and expiration dates, contact information (if public) for the registrant and, if available, a thumbnail of the Web site home page with traffic ranking, meta descriptions, keywords and more."