|
|
Hierarchical Name SpaceThe DNS Hierarchial Name Space is a map of how DNS servers determine what IP address to take you to when you type "en.wikipedia.org" into your address bar. Registrars Registrars, such as VeriSign, the operator of the .com and .net top-level domains, let any company, organization, or private individual register a TLD for any number of years. The domain name is then added to the Whois directory, and may point to a specific DNS server, which translates the domain name into an IP address. Map Domain names are read from right to left. Different sub-domains under a domain name are generally used to point to different servers, however, this is not always the case. For example, the Wikipedia guys might want a Spanish version of the site to be on a server in Mexico. So, es.wikipedia.org might point to 67.167.39.4, while en.wikipedia.org and database.en.wikipedia.org can both point to 24.73.285.3, just different pages. . -----------------------|----------------------------------- / / | \ \ \ com net mil org gov int | | | | | | google nsf army wikipedia whitehouse fr / | \ en es sv | database (imaginary)*
|
 |