What is Domain name?
A domain name is your website name. It is the address where Internet users can access your website. It is used for finding and identifying computers on the Internet. They were developed and used to identify entities on the Internet, rather than using IP addresses.
Domain names are formed using the rules and procedures f Domain Name System(DNS). A domain name can be any combination of letters and numbers, and it can be used in combination of the various domain name extensions, such as .com, .net, .org, .edu and more.
Domain names are organized in subordinate levels (subdomains) of the DNS root domain. The first-level set of domain names are the top-level domains (TLDs) such as .com, .info, .net, .edu, and .org, and the country code top-level domains (ccTLDs) such as .in, .us, .uk etc. Below these top-level domains in the DNS hierarchy are the second-level and third-level domain names that are typically open for reservation by end-user to run web sites.
Domain names are used worldwide, particularly in the world of networks and data communication. The end users can register the domain as per their requirement and run their Blog/Website. Through which they can share the information, run business and more.
A host or organization may use a domain as an alternate IP address because domain names are alphanumeric making them easier to memorize. A domain name is used as part of a URL to identify a website.
Nowadays Internet Corporation for Assigned Names and Numbers(ICANN) manages the architecture of internet domain name space. It gives permission to domain name registrars to register the domains. A registry is responsible for maintaining the database of domains registered with it. Registries and registrars usually charge an annual fee for the service of delegating a domain name to a user and providing a default set of name servers.
Types of Domain names
Top Level Domains(TLD)
these are the highest level of domains in Domain Name System.
Country Code Top Level Domains(ccTLD)
These are the domains specific to geographic location. Most probably country wise they are designated such as .in, .us, .uk, .de etc
Generic Top Level Domains(gTLD)
These can be registered by anyone, anywhere in the world. The best known generic TLD’s include .com, .net, .org and .info etc.
Second Level Domain
These domains are next to a Top Level Domain in the DNS. Let us say in www.exmple.com, .com is top level domain and example is second level domain.
This levels can go up to levels till the full name of the domain may not exceed a total length of 253 ASCII characters in its textual representation.
It is a part of a higher ranked domain name in DNS hierarchy.
Exmaple: info.example.com is the subdomain of example.com.
There are also other types of domains such as addon domain, parked domain etc.