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A Domain Name is part of a URL and can be typed into a browser to find a particular web site. When a computer connects to the Internet, it uses a unique IP Address; because IP Addresses can be difficult to remember, the DNS or Domain Name System was put in place to correlate IP Addresses to domain names.
ICANN is the ruling body that monitors the domain naming system.
Any domain name will abide by rules and procedures of the DNS. Domain names are used in various ways, networking contexts and addressing purposes. Depending on the type of domain one chooses to register, there are various features offered, such as: free email services, transfer and renewals, domain name options, DNS services and other such features. The individual host computers over the Internet use domain names in order to identify the host or hostnames. In this way, the hostnames are considered as a component of URLs (Uniform Resource Locators) for Internet resources like websites. However, the domain names are also used to simply identify labels to determine the ownership or maintain control over the resource.
How is a Domain Name Organized?
Basically, a domain names consists of an alphanumeric string which is divided into sections, with the most important sections separated by periods. For instance, if we take "icannwiki.com" the most important sections of this domain name are::
- The highest level of thedomain name, known as the Top-Level Domain is found at the far right; in this case it is the ".com" string.
- The TLD could have subdivisions, but in this case the information immediate to the left is the Second-Level Domain, represented by "icannwiki".
A domain name is organized from right to left, with the specific descriptions in the left part of the domain name while the general descriptors are in the right part. The machine name (WWW) is positioned at the far left. Dots are used in order to separate the domain levels.
Types of Domain Names
There are generic top-level extensions at a national level, which based on a code depending on the country, such as: France -.fr, Romania-.ro, United Kingdom-.uk, etc. National entities are responsible with the administration of these specific country codes.
There are cases when top-level domain names may receive sponsorship from institutions and various organizations. The difference between generic top-level domain names and sponsored domain names consists of a charter that defines the domain purpose such as: .gov (US government), .edu (US educational organizations),etc.