All You Need To Know Regarding Domain Name Space
The domain name space comprises the tree of domain names. In the tree houses, each node has information connected with the domain name. The tree further divides the domain name and the tree sub-divides into zones, beginning at the root. This tree of labels may comprise 127 levels and each label could contain as much as 63 ASCII characters. The full domain name may not exceed a total length of 253 characters, although, several domain registries can have limits which are shorter.
A domain name is made of one or more parts. These parts are technically referred to as labels. They are traditionally deliminated and concatenated by dots, such as myexample.com. The top-level domain is conveyed by the right-most label; like for instance, the domain name www.myexample.com belongs to the top-level domain com.
The hierarchy of domains descends from the right to the left label in the name. Each and every label to the left then specifies a subdivision, or sub-domain of the domain to the right. Like for instance: www is a sub-domain of myexample.com and the label example specifies a sub-domain of the com domain.
A domain name with at least one connected IP address is known as a hostname. The domain names www.myexample.com and myexample.com are an example of a hostnames, whilst the com part domain is not. However, other top-level domains, specifically country code top-level domains, can indeed have an IP address, and if so, they are also hostnames. Top-level domains or likewise referred to as TLDs are the highest level of domain names of the Internet. They include the DNS root zone of the hierarchical Domain Name System. Each and every domain name ends in a first-level or top-level domain label.
At first, domain name space was divided into only two main groups of domains, when the Domain Name System was created during the 1980s. A group of 7 generic top-level domains or also known as gTLD was implemented to represent a set of categories of multi-organizations and names. These initial domains were INT, EDU, ORG, GOV, NET, COM AND MIL. The country code top-level domains or likewise called ccTLD were initially based on the 2 character territory codes of ISO-3166 country abbreviations.
It then became essential to create more additional generic top-level domains as the World Wide Web expanded. There were 21 generic top-level domains in the month of October 2009, along with an additional 250 two letter country code top-level domains. The ARPA domain serves technical purposes in the infrastructure of the Domain Name System.
To be able to take the next step forward, the organization met in Paris during the year 2008, during the 32nd International Public ICANN meeting, to introduce new generic top-level domains with the creation of a new process of a TLD naming policy. The program foresees the availability of many already proposed or new domains along with a new implementation and application procedure. This can probably lead to hundreds of new top-level domains becoming registered in the future.
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