Currently At: Internet Encyclopedia > Software > DNS > WHOIS
Whois is used to lookup records in InterNIC's main database
for second-level domains.
Whois can be used as a program, or by telneting to ds.internic.net, or by contacting URL http://rs.internic.net/cgi-bin/whois
Whois performs generic, string-based searches on several databases
maintained by InterNIC, the most important of these being the
domain registration database. This database contains entries
for all valid second-level DNS
names, along with contact
information and name server addresses. Another database contains
thousands of contact people, arranged alphabetically.
All of these records are indexed by keys, which can be used (if known)
to match records exactly.