Whois - Implementation

Implementation

WHOIS lookups were traditionally performed with a command line interface application, but now many alternative web-based tools exist. WHOIS has a sister protocol called Referral Whois (RWhois).

A WHOIS database consists of a set of text records for each resource. These text records consists of various items of information about the resource itself, and any associated information of assignees, registrants, administrative information, such as creation and expiration dates.

Two data models exist for storing resource information in a WHOIS database, the thick and the thin model.

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