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advanced whois domain lookup,domain name whois

Main content page - domain name whois.Along with ability to search ip addresses we introduce also option to check validity of emails with our Email Address Lookup. Email lookup (check email) is advanced web utility that will perform free email address search and make a couple test to verify email address.
com, .net and .org domain names. The WHOIS is also a tool or an application which searches the domain name information contained in WHOIS databases. It is generally used to check either the availability of a domain name or the ownership of a domain name.
From there I do a reverse DNS (rDNS) lookup to see what hostname the ISP provides. A hostname is something like www.example.com, or can be more specific to include regional information.
Various commercial Unix implementations may use their own implementations (for example, Sun Solaris 7 has a WHOIS client authored by Sun). A WHOIS command line client typically has options to choose which host to connect to for whois queries, with a default whois server being compiled in.
Whois services operate through a whois server. Any one can connect to a whois server and send a query. The whois server will then respond to the query and close the connection. Any one can run a whois server.