The Reason for DNS development

The DNS system was developed as a means to label computer systems participating on the Internet with human-friendly characters. It assigns difficult to remember numerical IP (Internet Protocol) addresses, such as 74.200.81.27, to user-created addresses, such as: www.hscripts.com.

The system allows the addresses to remain constant, throughout any kind of Internet connection. Therefore, DNS provides not only easier to remember www locations but also absolute locations.

Domain information is stored on name servers which appropriate changes in IP. This way, all of the information does not need to be updated at one centralized location (ideally the registrar).

DNS can also be used to store other information such as mail server lists. These lists constitute which domains mail servers will accept emails from.

The DNS system was basically developed as a phonebook/blueprint for various internet locations. It not only contains location information, but architectural data as well, both vital to the practicality and usability of the Internet.