Working with WhoIs
WhoIs is a useful network information utility that allows to get all the available information about IP addresses, host names, location, ISP name, administrator and technical support contact information of any place in the Web. WhoIs is an information retrieval tool, which you might use to find information about the people or entities responsible for a routing failure, or a web site.
Example: Enter 126.96.36.199 (Apple) and select whois.arin.net Server. Then click in Ask Server button. (Fig. 1).
As a result, in the central panel, you can see the resolving IP with the following information: OrgName, Address, City, State, POBox, Country, Name Server and so on. (Fig. 2)