|A domain name is the actual words or names that a website addresses to its intended users. The Domain Name System (Dns) is a decentralized and hierarchical naming scheme for computers, internet services, or other online resources associated with the Internet or a private local network. It associates different information with domain names uniquely assigned to each of the involved entities. In simple terms, domain names are unique key-words or labels given to a domain, an internet service provider or a website, that uniquely identifies the particular computer or other entity which owns and operates the domain.|
An IP address is actually a series of numbers used together with a short name to identify a specific computer or server. In simple terms, the IP address is a string of numbers which uniquely identifies a specific computer or server in the network. Similarly, a domain name is a string of words or alphanumeric characters identifying a specific internet service provider, domain name, website or computer.
A name server is an important part of the Domain Name System. It is an application that dynamically determines or identifies the IP addresses assigned to an individual or entity. Name servers can be network operated or centralized, with server centers being the most common. Name servers may serve as gateways to the domain system, through which clients connect to domain systems via the internet or through other communications technologies such as fax.
Some popular name servers are dyldap. It serves as a directory for email addresses, and also for the domain names themselves. It is one of the protocols used to locate email servers for other protocols such as SMTP and IMAP. The dns protocol is used to translate domain names to IP addresses and vice versa, and sometimes it is used to determine which subnet names a server should use for a specific computer system.
Some of the popular IP address sub-types are: primary DNS, secondary DNS, top DNS, local DNS, global DNS, virtual hosting DNS and namespaced IP addresses. These domain name servers are authoritative for the primary DNS, which is the domain on which all other sub-names depend. If another domain is specified during the bind request, the primary DNS will check the specified domain and if it does not contain the requested domain name, it will return a list of available domains. This list is known as the root name servers.
There are different types of domain name registrars including the following: ICANN, DNS Banks, Shared DNS, autonomous system organizations (ASO), dedicated server registrars and last-resort registrars. The main advantage of using these registrars is that they provide flexibility and control and security for the user. They are also able to provide guaranteed quality service and reliable location.
An IP address has the specific meaning only when it has been specified during the binding process. Even if the name server is authoritative for some sub-name, if it is resolved after the query result, the name server is authoritative for the whole domain resolved after that. Name resolution using the DNS root zone is done by checking the IP addresses against the zone records and then checking whether they point to an IP address or not. If the resolved names do not point to any IP address, it will return a zone-specific error message.
Apart from the DNS, another service used to discover the domain name is the WHOIS website. The WHOIS website was introduced to make information about domain names, extensions and registrars easily accessible by the public. It contains database entries for registered domain names, description of terms, and information regarding the registrant. The WHOIS website is supported by sub-protocols and query language(QL) that enables the client computers to interact with the WHOIS database.