What is a Domain Name
From Free Hosting Wiki
 What is a Domain Name
A domain name It is a unique identifier - combination of letters and-or numbers
which identifies a specific website or computer on the Internet.
There are three parts of a domain name: Top-level, second level, and third level.
- top level refers to the end of the domain (such as .com) and identifies the type of organization.
- second level domain is the common name identifier such as “Google” and identifies the organization’s website.
- third level domain is at the beginning of the domain name (e.g. www) and identifies a particular host server.