Full Form of DNS

Full Form of DNS

Domain Name System

DNS Full Form is Domain Name System. DNS refers to the Internet service which translates domain names into IP addresses. Since domain names are assigned in alphabetical order, it is easy to remember them. Essentially, each time you use a particular domain name the DNS service translates it to the respective IP address. For eg., a domain name ‘www.abc.com’ might be translated as ‘198.129.543.2’. DNS system has its network. Therefore, if one DNS system is unable to translate, it seeks other DNS systems until the IP address is achieved or received. In addition to these, the DNS system also mentions the technicality of database service in its core. It is meant to define the protocol of DNS.

Full Form of DNS
Full Form of DNS


DNS is essentially a hierarchical, decentralized nomenclature system for services, computers, or any other resource which has a connection with the Internet or private network. It causes association of information with domain names that are assigned to every participating entity. It also translates memorized domain names into numerical IP addresses required for identifying and locating devices and services with the network protocols. It provides a worldwide directory service and thus, it is an integral part of the Internet’s functionality.


The DNS delegates the responsibility to assign domain names and map those names to the Internet resources by the designation of authoritative nameservers for every domain. Administrators of Networks may also delegate authority over their name space’s sub-domains to other name servers. This whole mechanism facilitates distribution designed to prevent an individual central database. The DNS also defines the technicalities associated with the database service. It is the one that defines the DNS protocol, which is essentially an elaborate specification of the data communication exchanges and data structures utilized in the DNS, as a component of the Internet Protocol Suite.


Ever since the 1980s, the DNS has become prominently in use due to failures of its predecessors who failed to provide global directories. The most commonly used types of records in the DNS database are SMTP mail exchanges (abbreviated as MX), Start for Authority (abbreviated as SOA), Pointers for Reverse DNS lookup (abbreviated as PTR), domain name aliases (abbreviated as CNAME), IP addresses (A and AAAA), and name servers (abbreviated as NS). DNS can also store records of other kinds of data for human queries like responsible person (abbreviated as RP) records, or automatic lookups like DNSSEC records. DNS has been in use in fighting unsolicited emails, commonly known as spams, by conducting storage of a real-time black hole list.


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