Understanding Domain and Subdomain
A domain name is an identification string that defines a realm of administrative autonomy, authority or control within the Internet. Domain names are formed by the rules and procedures of the Domain Name System (DNS). Any name registered in the DNS is a domain name. Domain names are used in various networking contexts and application-specific naming and addressing purposes. In general, a domain name represents an Internet Protocol (IP) resource, such as a personal computer used to access the Internet, a server computer hosting a web site, or the web site itself or any other service communicated via the Internet.
A subdomain is a domain that is a part of a main domain.
it is a lower level domain that is added on the left of the domain name, i.e. subdomain.example.com. You can create as many sub-domains as allowed by your plan. Domains and sub-domains have equal functional capabilities, including web site management, mail services, FTP, dedicated IPs, etc., share a DNS zone.
The difference between a domain and a subdomain
The difference between a subdomain and a domain name can be explained easily. While a domain name is a full website address, totally independent of other domain names, a sub domain depends on a domain name. If for example “yourdomain.com” is your domain name, then http://yourdomain.com and http://www.yourdomain.com would be your domain name’s address. A sub domain name would be a name *under* your domain name, something like “subdomain.yourdomain.com”. Its address would then be: http://subdomain.yourdomain.com
and http://www.subdomain.yourdomain.com. It can say anything you want instead of “sub domain” and the nice thing is that unlike a full domain name, a sub domain does not need to be registered. They are created freely on blogger, wordpress, joomla, and any other platform that surports the creation of a blog.
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