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ICANN's list of permissible purposes includes domain-name research, domain-name sale and purchase, regulatory enforcement, personal data protection, legal actions, and abuse mitigation. [42] Although WHOIS has been a key tool of journalists in determining who was disseminating certain information on the Internet, [ 43 ] the use of WHOIS by the ...
Jay Westerdal (born 1978) is an American domainer and entrepreneur, best known for his work creating DomainTools.com, a web service that looks up historical ownership of a website. The whois service was integrated into Google's onebox in May 2008. [1] He later sold the company in 2008 for a reported $16–$18 million. [2] He is a technology ...
For example, to do a reverse lookup of the IP address 8.8.4.4 the PTR record for the domain name 4.4.8.8.in-addr.arpa would be looked up, and found to point to dns.google. If the A record for dns.google in turn pointed back to 8.8.4.4 then it would be said to be forward-confirmed.
Domaintools – Probably the most comprehensive of the WHOIS tools, however requires you enter a CAPTCHA and has a limit of about 50 lookups a day. Be sure to check not just the ASN but the network name, etc, when attempting to determine if an IP belongs to a school or is otherwise shared.
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WHOIS++ was devised as an extension to the pre-existing WHOIS system. [2] WHOIS was an early networked directory service, originally maintained by SRI International for the Defense Data Network . The WHOIS protocol is still widely used to allow domain ownership records in the Internet to be easily queried.