Domain Name
In the system of domain names, domain name (NDD in abbreviated French or DN for Domain Name in English) is an internet domain identifier.
A domain is a collection of computers connected to the Internet and having a common characteristic.
Examples of field:
the field. fr is the set of computers hosting activities for individuals or organizations who are registered with the Registry AFNIC is responsible for the top-level domain. fr, in general, those persons or businesses a certain relation (which may be tenuous in some cases) with France;
the field is paris.fr all computers hosting activities for the city of Paris.
A domain name is a "mask" to an IP address. The purpose of a domain name is easy to remember and communicate the address of a set of servers (website, email, FTP, ...). For example, wikipedia.org is easier to remember than 91.198.174.2