A domain name is a unique name that identifies an internet resource over the world wide web. It is an identification string that defines a realm of administrative autonomy, authority or control on the Internet. Domain names are formed by the rules Domain Name System (DNS). Any name registered in the DNS is a domain name. Domain Name System, or DNS, is the most recognized system for assigning addresses to Internet web servers or “Internet hosts“. Domain names are like easy to remember strings that helps to locate hard to remember numeric IP address.
A domain name consists of two parts, a top-level and a second-level domain. A top-level domain or TLD is the part of the domain name located to the right of the dot (“.”). The most common TLDs are .com, .net, and .org.
A second-level domain or SLD is the portion of the domain name that is located immediately to the left of the dot and domain name extension. For example, the SLD in consoleindiainc.com is consoleindiainc.
What is the ‘www’ before my domain name?
The www before your domain name is a subdomain and it is not part of the domain name itself. Therefore, if someone sets the www CNAME record to point to primary A record, the website will resolve both at www.yourdomain.com and yourdomain.com.