|The Domain Name System (Dns) is a decentralized and hierarchical naming scheme for computers, websites, other electronic resources attached to the Internet, or private networks. It associate different information regarding domain names with different nameserver computers that are directly or indirectly associated with them. In simpler terms, it is the system by which we identify an IP address or any other domain name with its corresponding IP address or website. A website can be easily identified as well as located when you know the IP address of the domain name.|
There are several domain name systems around the world. Among these there are the major ones like ICANN (Internet Corporation for Assigned Names and Numbers), IANA (Internet Assigned Numbers Authority), DVBL (Digital Certificate Block), and CIDR (Content Discovery Resolver). Each one of them has its own functions and limitations. The major ones provide services to end-users while others provide support to DNS root servers. Root servers are responsible in sending DNS requests to come up with a correct address for a domain name.
They carry out such request by delegating the requested domain name to a set of data feeders, which are responsible in forwarding them to the correct location. There are several ways by which these information can be forwarded. For instance, some sites forward their mail server address along with the domain name as the header. There are others who advertise the domain name as the subject of an email message and make it accessible to everyone.
The next step involves the DNS providers who look for suitable nameservers and assign them to clients. A nameserver is an IP address, subnet, or host name that is uniquely associated with a particular domain name. It is unique only if the client has control of it.
In the past, there was no way to automate this process. This is because of certain limitations in the DNS system. Today, however, many DNS providers have integrated automatic nameservers and addresses with their hosting plans. They can be easily configured using your favorite web browser. Most importantly, you do not have to be technical geek in order to setup this process.
If you are wondering how, the process basically starts by having someone, usually a DNS server administrator, create a DNS zone that contains all the sub-domains and names of websites that should be accessible via internet. After that, he or she creates a zone file that contains the desired domain names and their associated IP address. Then, the administrator enters the IP address of each domain names into the applicable zones. It should be noted that the IP address consists of 8 digits in length.
The next thing that will happen is that the DNS server will then assign an IP address and a name to each domain names in the zone. Then, it will query the IP address of every website in the zone. The DNS server verifies that there is information available for the domain names that is requested. When all the required information is received and evaluated, the DNS server returns a list of all the currently registered domains. As soon as the requested website is found, the nameserver will return a response indicating whether the domain name is still available or not.
The nameservers, however, play a vital role in keeping the DNS system up and running. Without the DNS nameservers, it would be impossible for users to access the DNS servers. There are now too many Dns nameservers out there being offered at varying rates. Hence, it is advisable that you compare the different pricing structure to get the most affordable rate.